Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | 
                                                38,439,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,772,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and deposits | 
                                                7,761,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,182,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,763,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -72,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                13,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,311,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                693,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                4,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investment securities | 
                                                2,782,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,705,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,731,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,778,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -34,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -95,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                18,348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,474,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Current assets | ||
| Accounts receivable - other | 
                                                1,456,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,724,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                1,130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,064,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | ||
| Assets | 
                                                56,787,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | 
                                                22,417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                3,300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,509,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                552,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | 
                                                1,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,502,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,641,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,042,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                1,654,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,548,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | 
                                                92,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Current liabilities | ||
| Contract liabilities | 
                                                4,686,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Liabilities | 
                                                24,071,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,978,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                31,588,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                5,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                14,756,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,756,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                13,685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,854,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,616,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                689,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                530,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                366,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                32,716,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                56,787,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Valuation and translation adjustments | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings |