Commitments and Contingencies - Schedule of Senior Unsecured Notes (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Aug. 17, 2021	May 14, 2021	Mar. 26, 2021	Dec. 31, 2020	May 26, 2020	Mar. 04, 2020
Debt Instrument [Line Items]
Principal amount outstanding	$ 4,200,000,000
Carrying value	4,161,422,000				$ 3,366,777,000
Fair Value	$ 4,355,789,000				3,616,323,000
4.750% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 01, 2026
Carrying value					496,257,000
Fair Value					522,325,000
5.375% Senior Unsecured Notes Due 2027 [Member]
Debt Instrument [Line Items]
Maturity Date	May 15, 2027
Principal amount outstanding		$ 500,000,000.0
Carrying value					495,819,000
Fair Value					538,100,000
4.000% Senior Unsecured Notes Due 2029 [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 15, 2029
Principal amount outstanding	$ 1,000,000,000
Carrying value	991,455,000				990,364,000
Fair Value	$ 1,047,950,000				1,073,040,000
3.625% Senior Unsecured Notes Due 2030 [Member]
Debt Instrument [Line Items]
Maturity Date	Sep. 01, 2030
Principal amount outstanding	$ 900,000,000			$ 500,000,000.0			$ 400,000,000.0
Carrying value	894,263,000				395,458,000
Fair Value	$ 924,777,000				419,428,000
3.875% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Maturity Date	Feb. 15, 2031
Principal amount outstanding	$ 1,000,000,000					$ 1,000,000,000.0
Carrying value	989,973,000				988,879,000
Fair Value	$ 1,046,620,000				$ 1,063,430,000
3.625% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 01, 2031
Principal amount outstanding	$ 600,000,000		$ 600,000,000.0
Carrying value	593,538,000
Fair Value	$ 625,536,000
3.250% Senior Unsecured Notes Due 2033 [Member]
Debt Instrument [Line Items]
Maturity Date	Aug. 15, 2033
Principal amount outstanding	$ 700,000,000	$ 700,000,000.0
Carrying value	692,193,000
Fair Value	$ 710,906,000