Quarterly Consolidated Statement Of Cash Flows
| Concept | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2021-04-01 to 2022-03-31 | As at 2022-03-31 | 2021-04-01 to 2022-03-31 | As at 2021-03-31 | 
|---|---|---|---|---|---|---|---|
| Quarterly consolidated statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | — | 
                                                1,720,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,874,098,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,843,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,937,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                2,577,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,589,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -158,240,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -112,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                12,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Foreign exchange losses (gains) | — | — | 
                                                -601,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -196,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                -24,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -420,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                519,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,336,441,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | — | — | 
                                                -191,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,143,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -194,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -263,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                3,807,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,222,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                156,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -12,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -23,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid | — | — | 
                                                -803,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -707,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                3,147,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,608,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | |||||||
| Purchase of investment securities | — | — | 
                                                -323,436,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -117,949,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of investment securities | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -10,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -101,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -2,295,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,127,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from financing activities | |||||||
| Proceeds from short-term borrowings | — | — | 
                                                2,150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                650,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of short-term borrowings | — | — | 
                                                -1,150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -659,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from long-term borrowings | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | — | — | 
                                                -700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -350,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of treasury shares | — | — | 
                                                -36,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -45,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -259,020,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -300,117,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid to non-controlling interests | — | — | 
                                                -174,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -122,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -35,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -42,248,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                -168,842,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -718,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | — | 
                                                605,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                493,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                1,289,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                255,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | 
                                                10,320,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                9,024,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,769,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |