Directors (And Other Officers)
| Concept | 
                                    
                                        As at 2025-03-24  | 
                            
                                
                                    
                                        As at 2025-03-24  | 
                            
                                
                                    
                                        As at 2025-03-24  | 
                            
                                
                                    
                                        As at 2025-03-24  | 
                            
                                
                                    
                                        As at 2025-03-24  | 
                            
                                
                                    
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                                        As at 2025-03-24  | 
                            
                                
                                    
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| Directors (and other officers) | ||||||||||
| Information about directors (and corporate auditors) | ||||||||||
| Official title or position | 
                                        
                                             
                                                監査役
                                                
                                             
                                        
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                                                取締役
                                                
                                             
                                        
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                                                取締役
                                                
                                             
                                        
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                                    — | 
                                        
                                             
                                                取締役 指名・報酬委員会委員長
                                                
                                             
                                        
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                                                取締役
                                                
                                             
                                        
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                                                代表取締役社長 グループ経営全般、中期経営戦略策定委員会委員長、CSR・コンプライアンス委員会委員長
                                                
                                             
                                        
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                                                取締役
                                                
                                             
                                        
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                                                常勤監査役
                                                
                                             
                                        
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                                                監査役
                                                
                                             
                                        
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| Name | 
                                        
                                             
                                                小 野 隆 良
                                                
                                             
                                        
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                                                田 中 直 子
                                                
                                             
                                        
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                                                岡 田 英 明
                                                
                                             
                                        
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                                    — | 
                                        
                                             
                                                尾 崎 行 正
                                                
                                             
                                        
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                                                大 鹿 麗 子
                                                
                                             
                                        
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                                                西 永 裕 司
                                                
                                             
                                        
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                                                齋 藤 忠 夫
                                                
                                             
                                        
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                                                中 瀬 縁
                                                
                                             
                                        
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                                                西 廣 陽 子
                                                
                                             
                                        
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| Date of birth | 
                                        
                                             
                                                1956-03-23
                                                
                                             
                                        
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                                                1971-08-03
                                                
                                             
                                        
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                                                1973-01-11
                                                
                                             
                                        
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                                    — | 
                                        
                                             
                                                1959-09-02
                                                
                                             
                                        
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                                                1958-07-12
                                                
                                             
                                        
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                                                1965-02-07
                                                
                                             
                                        
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                                                1952-08-12
                                                
                                             
                                        
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                                                1969-12-14
                                                
                                             
                                        
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                                                1971-11-20
                                                
                                             
                                        
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| Career summary | — | |||||||||
| Term of office | 
                                        
                                             
                                                (注)5
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
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                                    — | 
                                        
                                             
                                                (注)3
                                                
                                             
                                        
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                                                (注)3
                                                
                                             
                                        
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                                                (注)3
                                                
                                             
                                        
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                                                (注)4
                                                
                                             
                                        
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                                                (注)5
                                                
                                             
                                        
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                                                (注)6
                                                
                                             
                                        
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| Number of shares held (Ordinary shares) | 
                                        
                                             
                                                9,100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                12,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                284,300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                25,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                202,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                25,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                9,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     |