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 | 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 | 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 | 
                                                34,599,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,433,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,443,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,033,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                696,328,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,255,843,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,784,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                419,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,033,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,514,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,894,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,399,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                692,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,507,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,381,511,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,379,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                398,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,894,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                142,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                743,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -886,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                886,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                550,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                629,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,716,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -629,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,774,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||||
| Depreciation | 
                                                1,055,355,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,146,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,313,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,109,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,092,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                968,597,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                171,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,653,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                361,343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                263,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                937,572,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                78,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,046,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                1,435,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,597,566,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,014,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                142,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,467,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,743,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,063,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                218,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                641,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,026,196,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,086,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |