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Credit and Other Debt Agreements - Additional Information (Detail) - USD ($)	Jun. 22, 2023	Mar. 02, 2023	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 1,700,000,000
Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, term	5 years
Credit facility, current borrowing capacity	$ 1,200,000,000
Letter of Credit Sub-facility [Member]
Debt Instrument [Line Items]
Credit facility, current borrowing capacity	$ 75,000,000
Fixed Rate of 5.75%, Balloon Due March 2, 2053 [Member]
Debt Instrument [Line Items]
Periodic payment of interest			5.75%	5.75%
Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Notes issued and sold		$ 950,000,000
Weighted average interest rate		5.05%
Realized a cash gain (loss) on hedging transaction		$ 112,700,000
Derivative instrument, term		10 years
Unsecured Senior Notes [Member] | Fixed Rate of 5.50%, Balloon Due May 2, 2033 [Member]
Debt Instrument [Line Items]
Notes issued and sold		$ 350,000,000
Periodic payment of interest		5.50%
Periodic payments of interest and principal, expiry year		2033
Unsecured Senior Notes [Member] | Fixed Rate of 5.75%, Balloon Due March 2, 2053 [Member]
Debt Instrument [Line Items]
Notes issued and sold		$ 600,000,000
Periodic payment of interest		5.75%
Periodic payments of interest and principal, expiry year		2053

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