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Income taxes - Liability for Unrecognized Tax Benefits and Deferred Tax Position Recorded on Consolidated Balance Sheets (Detail) - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Tax Disclosure [Abstract]      
Liability for unrecognized tax benefits € (215.5) € (205.9) € (200.4)
Deferred tax assets 1,672.8 1,098.7 671.5
Deferred tax liabilities (51.5) (34.7) (37.9)
Deferred and other tax assets (liabilities) € 1,405.8 € 858.1 € 433.2