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Debt - Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Aug. 12, 2024	May 10, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Senior notes	$ 3,993			$ 3,120
Credit facility term loan due	992			989
Mortgage and other debt, with an average interest rate of 4.67% at both December 31, 2024 and 2023, maturing through November 2027	98			100
Total debt	5,083			4,209
Series E senior notes, with a rate of 4% due June 2025
Debt Instrument [Line Items]
Senior notes	$ 500			499
Debt interest rate	4.00%
Series F senior notes, with a rate of 4½% due February 2026
Debt Instrument [Line Items]
Senior notes	$ 399			399
Debt interest rate	4.50%
Series G senior notes, with a rate of 3⅞% due April 2024
Debt Instrument [Line Items]
Senior notes	$ 0			400
Debt interest rate	3.875%
Series H senior notes, with a rate of 3⅜% due December 2029
Debt Instrument [Line Items]
Senior notes	$ 644			643
Debt interest rate	3.375%
Series I senior notes, with a rate of 3½% due September 2030
Debt Instrument [Line Items]
Senior notes	$ 740			738
Debt interest rate	3.50%
Series J senior notes, with a rate of 2.9% due December 2031
Debt Instrument [Line Items]
Senior notes	$ 442			441
Debt interest rate	2.90%
Series K senior notes, with a rate of 5.7% due July 2034
Debt Instrument [Line Items]
Senior notes	$ 585			0
Debt interest rate	5.70%		5.70%
Series L senior notes, with a rate of 5.5% due April 2035
Debt Instrument [Line Items]
Senior notes	$ 683			0
Debt interest rate	5.50%	5.50%
Credit facility term loan due January 2027
Debt Instrument [Line Items]
Credit facility term loan due	$ 499			499
Credit facility term loan due January 2028
Debt Instrument [Line Items]
Credit facility term loan due	499			498
Secured Debt
Debt Instrument [Line Items]
Mortgage and other debt, with an average interest rate of 4.67% at both December 31, 2024 and 2023, maturing through November 2027	$ 98			100
Average interest rate	4.67%
Credit facility revolver
Debt Instrument [Line Items]
Credit facility revolver	$ (6)			$ (8)