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 | 
                                                7,144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,137,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,314,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                12,808,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,638,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                6,016,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Leased assets | — | — | 
| Leased assets, net | 
                                                489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,010,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                704,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                482,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,939,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                8,438,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,732,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                21,246,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                42,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                189,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                271,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                6,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,659,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                2,676,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,733,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                514,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                12,583,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,951,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                19,126,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                5,305,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,305,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -5,392,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                1,804,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,686,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Deferred gains or losses on hedges | 
                                                301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                21,246,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |