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Debt (Senior Notes and Debentures) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Loss on extinguishment of debt and other related costs	$ 2	$ 0	$ 0
Senior notes: April 2029
Debt Instrument [Line Items]
Principal	$ 750	$ 750
Interest rate	4.875%	4.875%
Senior notes: April 2029 March Issuance
Debt Instrument [Line Items]
Principal					$ 400
Senior notes: April 2029 December Issuance
Debt Instrument [Line Items]
Principal		$ 350
Senior notes: April 2034
Debt Instrument [Line Items]
Principal	$ 800	800			$ 800
Interest rate	5.00%
Term Loan Facility
Debt Instrument [Line Items]
Principal	$ 0	500
Loss on extinguishment of debt and other related costs		1
Senior notes: December 2033
Debt Instrument [Line Items]
Principal	$ 650	650
Interest rate	5.00%
Senior notes: November 2029
Debt Instrument [Line Items]
Principal	$ 400	0		$ 400
Interest rate	5.00%
Senior notes: November 2034
Debt Instrument [Line Items]
Principal	$ 500	$ 0		$ 500
Interest rate	5.20%