Semi-Annual Statement Of Cash Flows
| Concept | 2023-07-01 to 2024-06-30 | As at 2024-06-30 | As at 2023-06-30 | 2022-04-01 to 2023-06-30 | As at 2022-03-31 | 
|---|---|---|---|---|---|
| Semi-annual statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | 
                                                3,966,868,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,099,703,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | 
                                                516,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                36,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | 
                                                -29,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -111,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | 
                                                -145,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -839,188,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | 
                                                3,798,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,136,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | 
                                                -1,104,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,072,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of investment securities | 
                                                -97,356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | 
                                                -45,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                185,468,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | 
                                                -643,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -2,120,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | 
                                                1,073,489,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,324,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | 
                                                -1,518,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,596,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from issuance of shares | 
                                                517,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | 
                                                -400,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -418,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | 
                                                -595,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,158,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                2,559,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -141,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | — | 
                                                4,758,708,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,199,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,341,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |