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Share-based Payment Expense - Summary of Movement and Options Outstanding Under Share Option Schemes (Detail)

12 Months Ended

Dec. 31, 2021

shares

Options

€ / shares

Dec. 31, 2020

Options

shares

€ / shares

Dec. 31, 2019

shares

Options

€ / shares

Disclosure Of Share Based Compensation Expense [line items]

Number of options, Exercised | Options

(521,523)

(256,521)

(1,147,149)

Share Option Schemes Excluding Savings Related Share Option Schemes [member]

Disclosure Of Share Based Compensation Expense [line items]

Number of options, Outstanding at beginning of year | shares

197,253

^[1]

278,349

^[1]

800,770

Number of options, Exercised | shares

^[2]

(51,522)

(77,748)

(520,115)

Number of options, Lapsed | shares

(3,348)

(2,306)

Number of options, Outstanding at end of year | shares

^[1]

145,731

197,253

278,349

Number of options, Exercisable at end of year | shares

145,731

197,253

278,349

Weighted average exercise price, Outstanding at beginning of year | € / shares

€ 16.19

^[1]

€ 16.19

^[1]

€ 16.48

Weighted average exercise price, Exercised | € / shares

^[2]

16.19

16.19

16.65

Weighted average exercise price, Lapsed | € / shares

16.19

16.19

Weighted average exercise price, Outstanding at end of year | € / shares

^[1]

16.19

16.19

16.19

Weighted average exercise price, Exercisable at end of year | € / shares

€ 16.19

€ 16.19

€ 16.19

[1]	All options granted have a life of ten years. All outstanding options are denominated in euro and have an exercise price of €16.19 (2020: €16.19; 2019: €16.19).
[2]	The weighted average share price at the date of exercise of these options was €42.10 (2020: €31.70; 2019: €29.10).

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