Semi-Annual Consolidated Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                9,437,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,494,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -95,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -80,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                70,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                35,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                13,872,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,936,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                15,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                6,456,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                1,087,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,366,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                20,403,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,822,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                13,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,039,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                6,897,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,913,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -71,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                56,945,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,024,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                127,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,321,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                17,167,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,820,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                9,570,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,360,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                669,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,955,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                12,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                43,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                12,592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                3,034,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,056,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                4,270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,712,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                20,022,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                63,789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,713,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                10,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                452,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                452,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                40,452,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,956,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,955,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                49,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,896,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                7,007,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                -22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Revaluation reserve for land | 
                                                3,913,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,913,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                1,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                683,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                3,014,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                14,939,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,712,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                64,045,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,608,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                127,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,321,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |