Major Shareholders
| Concept | 
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                        
|---|---|---|---|---|---|---|---|---|---|---|---|
| Major shareholders | |||||||||||
| Major shareholders | |||||||||||
| Name | 
                                        
                                             
                                                サッポロビール株式会社
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                ㈱日本カストディ銀行
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                ㈱KY
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                ㈱きんでん
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                ㈱宝塚コーポレーション
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                住友生命保険相互会社(常任代理人 ㈱日本カストディ銀行)
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                STATE STREET BANK AND TRUST COMPANY 505223(常任代理人 ㈱みずほ銀行)
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                ㈱ジーアイ
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                日本マスタートラスト信託銀行㈱
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                伊藤與朗
                                                
                                             
                                        
                                     | 
                                
                            
| Address | 
                                        
                                             
                                                東京都渋谷区恵比寿4-20-1
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                東京都中央区晴海1-8-12
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                名古屋市瑞穂区彌富町月見ケ岡28-2
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                大阪市北区本庄東2-3-41
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                名古屋市千種区四谷通1-1
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                東京都中央区八重洲2-2-1(東京都中央区晴海1-8-12)
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                P.O. BOX 351 BOSTON MASSACHUSETTS 02101 U.S.A.(東京都港区港南2-15-1)
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                東京都港区赤坂8-12-46
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                東京都港区赤坂1-8-1
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                名古屋市瑞穂区
                                                
                                             
                                        
                                     | 
                                
                            
| Number of shares held | 
                                        
                                             
                                                3,351,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,110,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,335,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                49,209,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,442,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                13,419,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,555,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,252,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,921,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15,591,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                3,229,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Shareholding ratio (excluding treasury shares) | 
                                        
                                             
                                                0.0315
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0573
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0125
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.4618
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0135
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.1259
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0146
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0117
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0180
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.1463
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0303
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     |