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 | 
                                                4,753,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,168,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                202,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                242,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -6,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                11,009,670,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,749,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                295,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                236,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Land | 
                                                37,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | 
                                                34,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -28,551,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -29,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets, net | 
                                                6,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                1,633,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,633,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Goodwill | 
                                                131,094,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                278,313,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                284,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                383,922,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Deferred tax assets | 
                                                197,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,636,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                236,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                214,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -175,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -25,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                858,123,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                719,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                11,867,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,468,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                3,850,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                60,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                147,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                261,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                387,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                6,306,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,313,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                1,653,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,190,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                70,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,810,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                68,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                46,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                1,838,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,359,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                8,145,639,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,673,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                117,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                123,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses for directors (and other officers) | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                783,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                783,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                2,451,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,537,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -2,505,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,505,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                3,332,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,419,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Deferred gains or losses on hedges | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                389,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                3,722,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,794,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                11,867,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,468,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |