Semi-Annual Consolidated Statement Of Cash Flows
| Concept | 2023-07-01 to 2024-06-30 | As at 2024-06-30 | As at 2023-06-30 | 2022-07-01 to 2023-06-30 | As at 2022-06-30 | 
|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | 
                                                -1,571,043,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,371,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | 
                                                16,671,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                27,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | 
                                                -23,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -17,743,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | 
                                                -435,965,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -876,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | 
                                                -1,916,505,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                793,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | 
                                                -162,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -346,196,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of property, plant and equipment | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                33,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of investment securities | 
                                                346,917,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                152,188,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of shares of subsidiaries resulting in change in scope of consolidation | 
                                                -217,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -28,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | 
                                                -11,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -31,459,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | 
                                                -127,557,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -347,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Repayments of long-term borrowings | 
                                                -227,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -214,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | 
                                                -559,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -556,632,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | 
                                                -111,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -788,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | 
                                                -50,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Effect of exchange rate change on cash and cash equivalents | 
                                                5,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                -2,150,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -337,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | — | 
                                                2,116,895,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,266,911,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,604,749,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |