Debt - Basic Terms of Senior Notes (Detail) - 12 months ended Dec. 31, 2025	EUR (€)	GBP (£)	USD ($)
0.993% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Oct. 06, 2021
Debt instrument maturity date	Oct. 15, 2026
Par Value | €	€ 500,000,000
% of Par Value	100.00%
Interest Payment Frequency	Annually
5.000% Senior Unsecured Notes due 2027 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Sep. 21, 2017
Debt instrument maturity date	Oct. 15, 2027
Par Value			$ 1,400,000,000
% of Par Value	100.00%
Interest Payment Frequency	Semi-annually
3.692% Senior Unsecured Notes due 2028 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Dec. 05, 2019
Debt instrument maturity date	Jun. 05, 2028
Par Value | £		£ 600,000,000
% of Par Value	99.998%
Interest Payment Frequency	Annually
4.625% Senior Unsecured Notes due 2029 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Jul. 26, 2019
Debt instrument maturity date	Aug. 01, 2029
Par Value			900,000,000
% of Par Value	99.50%
Interest Payment Frequency	Semi-annually
3.375% Senior Unsecured Notes due 2030 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Mar. 24, 2021
Debt instrument maturity date	Apr. 24, 2030
Par Value | £		£ 350,000,000
% of Par Value	99.448%
Interest Payment Frequency	Annually
3.500% Senior Unsecured Notes due 2031 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Dec. 04, 2020
Debt instrument maturity date	Mar. 15, 2031
Par Value			1,300,000,000
% of Par Value	100.00%
Interest Payment Frequency	Semi-annually
7.000% Senior Secured Notes due 2032 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Feb. 13, 2025
Debt instrument maturity date	Feb. 15, 2032
Par Value | €	€ 1,000,000,000
% of Par Value	98.645%
Interest Payment Frequency	Semi-annually
8.500% Senior Secured Notes due 2032 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Feb. 13, 2025
Debt instrument maturity date	Feb. 15, 2032
Par Value			$ 1,500,000,000
% of Par Value	98.71%
Interest Payment Frequency	Semi-annually