Quarterly Consolidated Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                9,612,443,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,892,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                35,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,265,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Inventories | 
                                                53,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                351,877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                322,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -42,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -42,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                11,196,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,665,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                85,287,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Goodwill | 
                                                282,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                4,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                751,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                823,878,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                3,105,010,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,179,556,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                2,778,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,844,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                110,012,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                117,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                43,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                3,941,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,098,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                15,138,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,763,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                203,503,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                278,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                492,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,045,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                3,187,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,815,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Retirement benefit liability | 
                                                85,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                188,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                222,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                3,375,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,037,213,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,330,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,330,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                1,599,379,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,590,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                8,998,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,965,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -628,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -659,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                11,298,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,226,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                433,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                479,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                29,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                463,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                499,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                11,762,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,725,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                15,138,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,763,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |