Debt - Summary of Debt (Detail) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt		$ 11,358,826	$ 8,934,187
Debt issue costs and discount, net		(76,056)	(68,729)
Debt, net		11,282,770	8,865,458
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt	[1]	730,000	165,407
Interim Credit Facility [Member]
Debt Instrument [Line Items]
Debt		869,606
Term Loan [Member]
Debt Instrument [Line Items]
Debt		200,000	200,000
Term Loan [Member] | British Pound Sterling [Member]
Debt Instrument [Line Items]
Debt	[2]	947,240	956,900
Term Loan [Member] | Australia [Member]
Debt Instrument [Line Items]
Debt	[2]	871,560	923,280
4.000% Senior Unsecured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt	[2]		610,800
2.550% Senior Unsecured Notes due 2023 [Member]
Debt Instrument [Line Items]
Debt	[2]	541,280	546,800
3.325% Senior Unsecured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt	[2]	568,500	610,800
0.993% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt	[2]	568,500
2.500% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt	[2]	676,600
5.250% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt		500,000	500,000
5.000% Senior Unsecured Notes Due 2027 [Member]
Debt Instrument [Line Items]
Debt		1,400,000	1,400,000
3.692% Senior Unsecured Notes due 2028 [Member]
Debt Instrument [Line Items]
Debt	[2]	811,920	820,200
4.625% Senior Unsecured Notes Due 2029 [Member]
Debt Instrument [Line Items]
Debt		900,000	900,000
3.375% Senior Unsecured Notes Due 2030 [Member]
Debt Instrument [Line Items]
Debt	[2]	473,620
3.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Debt		$ 1,300,000	$ 1,300,000

[1] The 2020 column includes £121 million of GBP-denominated borrowings that reflect the exchange rate at December 31, 2020.

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