Debt - Summary of Debt (Parenthetical) (Detail) $ in Thousands, £ in Millions		Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 GBP (£)
Debt Instrument [Line Items]
Debt		$ 11,358,826	$ 8,934,187
GBP-denominated Borrowings [Member]
Debt Instrument [Line Items]
Debt | £				£ 121
4.000% Senior Unsecured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	4.00%	4.00%	4.00%
Debt	[1]		$ 610,800
2.550% Senior Unsecured Notes due 2023 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	2.55%	2.55%	2.55%
Debt	[1]	$ 541,280	$ 546,800
3.325% Senior Unsecured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	3.325%	3.325%	3.325%
Debt	[1]	$ 568,500	$ 610,800
0.993% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	0.993%	0.993%	0.993%
Debt	[1]	$ 568,500
2.500% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	2.50%	2.50%	2.50%
Debt	[1]	$ 676,600
5.250% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate		5.25%	5.25%	5.25%
Debt		$ 500,000	$ 500,000
5.000% Senior Unsecured Notes Due 2027 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate		5.00%	5.00%	5.00%
Debt		$ 1,400,000	$ 1,400,000
3.692% Senior Unsecured Notes due 2028 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	3.692%	3.692%	3.692%
Debt	[1]	$ 811,920	$ 820,200
4.625% Senior Unsecured Notes Due 2029 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate		4.625%	4.625%	4.625%
Debt		$ 900,000	$ 900,000
3.375% Senior Unsecured Notes Due 2030 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate	[1]	3.375%	3.375%	3.375%
Debt	[1]	$ 473,620
3.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, interest rate		3.50%	3.50%	3.50%
Debt		$ 1,300,000	$ 1,300,000

[1] Non-U.S. dollar denominated debt that reflects the exchange rate at period-end.