Quarterly Consolidated Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                20,458,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,055,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                229,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                521,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                5,013,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                715,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                429,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                506,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                37,492,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                13,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | 
                                                22,120,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -13,406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,695,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures, net | 
                                                8,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,977,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | 
                                                330,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles, net | 
                                                99,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                1,045,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                137,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                2,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,555,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                2,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,555,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                23,923,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,862,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                14,861,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term loans receivable | 
                                                1,358,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,501,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                133,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                377,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -55,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                40,096,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,707,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                77,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                5,689,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                186,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                987,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                243,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                26,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,602,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                17,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,521,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                3,267,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,798,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                8,808,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                26,663,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                11,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                11,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,089,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                25,533,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                46,276,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                2,254,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,019,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                2,121,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,594,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                4,396,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,656,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                252,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                50,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                77,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |