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Share-based compensation - Options on EUR-denominated listed share (Detail)
12 Months Ended
Dec. 31, 2023
€ / shares
Share-based compensation [Line Items]  
Number of share options granted in share-based payment arrangement 3,831,000
Euro [Member]  
Share-based compensation [Line Items]  
Weighted average share price, share options granted € 22.16
Number of share options forfeited in share-based payment arrangement (171,000)
Weighted average exercise price of other equity instruments forfeited in share-based payment arrangement € 22.16
Number of share options outstanding in share-based payment arrangement 3,660,000
Weighted average exercise price of share options outstanding in share-based payment arrangement € 22.16