Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||
| Segment information | ||||||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                7,891,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,080,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,646,120,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,299,879,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,153,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                243,292,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,091,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,909,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,914,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,858,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,621,012,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                290,760,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,564,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                430,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                287,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                398,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                370,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,462,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                851,714,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                892,984,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,644,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                894,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,741,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                429,456,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                844,455,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                511,476,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                332,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |