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 | 
|---|---|---|---|---|---|
| Consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                18,484,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,137,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                153,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -182,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -4,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                14,111,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -12,282,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,216,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                662,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,403,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | — | 
                                                -2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -11,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,305,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of shares of subsidiaries resulting in change in scope of consolidation | — | 
                                                -33,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,494,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Loan advances | — | 
                                                -24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of shares of subsidiaries resulting in change in scope of consolidation | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                97,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | — | 
                                                7,340,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -2,424,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,970,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -3,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,155,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid to non-controlling interests | — | 
                                                -263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of shares of subsidiaries not resulting in change in scope of consolidation | — | 
                                                -26,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -5,553,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,497,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                -195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -2,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,080,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                21,652,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                24,143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,062,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |