Quarterly Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Non-current assets | ||
| Property, plant and equipment | 
                                                3,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,715,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | 
                                                22,175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,266,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Investments and other assets | ||
| Deferred tax assets | 
                                                9,546,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,228,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                13,173,078,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,589,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Liabilities | 
                                                12,902,363,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,357,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                32,616,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,954,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                10,543,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                211,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                254,952,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,549,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                -7,955,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                66,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                -3,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                270,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                231,684,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                13,173,078,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,589,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |