Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-11-15 | As at 2024-05-15 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,674,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,675,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                4,501,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                21,334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                15,483,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,957,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                9,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                4,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                1,833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                471,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                8,909,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,047,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Other | 
                                                2,385,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,375,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                25,078,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,477,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                46,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                966,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                21,763,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                11,657,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                832,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                819,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,788,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                15,045,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                36,809,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                758,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Share capital | 
                                                1,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | 
                                                2,107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                6,683,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -259,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                9,534,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,192,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                -64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                -49,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -63,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                118,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                9,603,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                46,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |