Statement Of Cash Flows
| Concept | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | 2021-04-01 to 2022-03-31 | As at 2022-03-31 | As at 2021-03-31 | 
|---|---|---|---|---|---|
| Statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                2,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,817,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                62,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -46,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -45,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -5,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from operating activities | |||||
| Cash flows from operating activities | |||||
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -7,654,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,333,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -15,002,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from facilities maintenance and investing activities | |||||
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | — | 
                                                4,750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -2,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -3,050,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                1,948,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,179,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                1,099,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -17,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,472,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                13,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                30,733,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |