Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                9,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,654,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                14,832,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                5,687,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,904,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Leased assets | — | — | 
| Leased assets, net | 
                                                476,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                467,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,951,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,774,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                8,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                22,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,553,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                46,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                145,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,480,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                7,427,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                2,180,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,606,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                499,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                522,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                120,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                12,597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                20,024,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,333,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,895,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                5,308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,305,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -3,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                3,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Deferred gains or losses on hedges | 
                                                -339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                607,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                -339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                607,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,943,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,219,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                22,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,553,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |