Quarterly Consolidated Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                18,301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                1,669,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,098,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                6,495,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,717,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                12,666,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,699,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,055,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                57,468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                30,657,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,681,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                14,387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                10,587,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                121,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                5,561,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,165,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                1,381,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                3,609,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,652,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                11,038,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                9,251,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,791,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,938,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                45,304,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                102,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                9,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                1,950,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                6,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,779,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                31,914,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                13,600,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                924,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                248,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                14,910,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,761,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                46,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,523,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                9,061,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,061,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                10,384,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,384,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                36,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,273,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -2,964,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,978,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                53,414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,740,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                555,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                794,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                -21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                1,426,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                681,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                740,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                251,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                55,948,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,413,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                102,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |