Semi-Annual Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                28,930,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,096,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -445,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                69,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,045,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                4,261,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,098,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Goodwill | 
                                                639,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                515,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                957,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                318,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                371,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                8,409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,560,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                77,483,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,606,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                1,704,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                158,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                285,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,745,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Advances received | 
                                                5,638,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                26,474,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,299,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                17,854,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,666,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                16,745,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,550,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | 
                                                316,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                96,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                44,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,966,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Net assets | ||
| Share capital | 
                                                2,847,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,847,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | ||
| Capital surplus | 
                                                2,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                28,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -2,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                31,728,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,727,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                16,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                1,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,644,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                33,154,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,639,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                77,483,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,606,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |