Semi-Annual Balance Sheet
| Concept | As at 2024-02-15 | As at 2023-05-15 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,807,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,315,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,911,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,819,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                20,127,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,620,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                14,873,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                4,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,972,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                2,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,850,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                458,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investments and other assets | 
                                                8,866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,227,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,311,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                24,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                44,325,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Accounts payable - trade | 
                                                9,409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                5,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                153,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                5,014,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                21,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,795,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                13,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                10,418,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,740,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                729,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                35,121,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,192,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for bonuses | 
                                                362,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | ||
| Capital surplus | 
                                                2,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,098,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                6,357,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,019,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -291,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -299,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                9,172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,822,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                -21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                -81,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -96,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                9,204,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                44,325,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |