Financial Instruments - Additional Information (Detail) - EUR (€)	Mar. 31, 2024	Feb. 12, 2024
3.75% Senior Secured Notes due 2025
Financial Instrument At Fair Value [Line Items]
Debt instrument interest rate	3.75%	3.75%
Debt instrument estimated market price per 1000 principal amount	€ 987
Debt instrument base principal amount	€ 1,000
9.50% Senior Secured Notes due 2029
Financial Instrument At Fair Value [Line Items]
Debt instrument interest rate	9.50%	9.50%
Debt instrument estimated market price per 1000 principal amount	€ 1,069
Debt instrument base principal amount	€ 1,000