Quarterly Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-09-30 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,726,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,093,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                1,705,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,200,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                28,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                779,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                816,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -57,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -50,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                20,937,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,651,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                3,880,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,901,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Machinery and equipment | — | — | 
| Machinery and equipment, net | 
                                                67,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                546,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                451,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                2,009,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,138,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                2,368,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,170,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Goodwill | 
                                                403,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                214,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                1,641,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,187,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                324,108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                767,988,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                6,856,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,963,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                4,817,596,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,020,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,177,451,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,078,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -138,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -135,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                13,105,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,036,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                34,043,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,687,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                1,024,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,362,787,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                2,390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                269,551,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                446,687,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | 
                                                55,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                196,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,286,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,960,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                8,865,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,089,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Bonds payable | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                207,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                218,489,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,755,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,871,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                5,520,232,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,576,555,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                14,386,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,666,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,673,778,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,673,778,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                2,604,291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,604,291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                13,254,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,547,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -168,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -168,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                17,363,262,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,656,149,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                1,932,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,971,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                2,066,209,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,130,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                19,656,946,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,021,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                34,043,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,687,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |