Quarterly Consolidated Statement Of Cash Flows
| Concept | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|
| Quarterly consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                31,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,376,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                3,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,543,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -13,785,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,441,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                20,781,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,413,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -29,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -33,670,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | — | 
                                                -1,877,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                11,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,649,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Loan advances | — | 
                                                -1,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from collection of loans receivable | — | 
                                                566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                679,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                -57,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -22,026,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Purchase of treasury shares | — | 
                                                -14,433,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,998,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -12,595,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,055,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid to non-controlling interests | — | 
                                                -142,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of shares of subsidiaries not resulting in change in scope of consolidation | — | 
                                                -524,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -336,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -17,123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -30,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                1,650,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -16,717,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                26,836,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                42,533,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |