Semi-Annual 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 | 
|---|---|---|---|---|---|
| Semi-annual statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                1,406,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,871,993,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                35,402,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -161,929,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -104,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -549,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -551,371,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                851,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,368,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -314,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -609,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                99,390,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,455,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,453,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                1,749,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                17,672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -955,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -835,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | — | 
                                                2,128,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -2,607,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,779,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -134,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                141,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,505,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                -5,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                152,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                113,803,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                189,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -857,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                3,438,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,191,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,683,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |