Semi-Annual Consolidated Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                13,175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,859,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                57,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                8,417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,541,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Goodwill | 
                                                1,673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,442,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                3,116,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                4,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,655,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                4,324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                809,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -63,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -37,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                16,467,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                73,943,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                15,995,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,363,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                79,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | 
                                                735,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,340,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                4,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,932,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                26,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,785,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                859,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                1,712,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                28,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,915,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                5,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                5,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                32,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,313,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -167,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -193,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                42,929,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,039,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                1,433,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Revaluation reserve for land | 
                                                378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                724,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                410,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                410,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                2,908,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                45,837,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                73,943,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |