Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Asset Balances (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Goodwill
Beginning balance		$ 325		$ 319
Additions		22		6
Ending balance		239		325		$ 319
Intangible Assets
Beginning balance, cost		206		198
Additions		25		8
Ending balance, cost		231		206		198
Beginning balance, accumulated amortization		(25)		(15)
Beginning balance, net carrying amount		181		183
Amortization		(12)		(10)
Impairment	[1],[2]	(108)		0		0
Ending balance, accumulated amortization		(37)		(25)		(15)
Ending balance, net carrying amount		194		181		183
Total Goodwill and Other Intangible Assets - Net
Beginning balance		506	[3]	502
Additions		47		14
Amortization		(12)		(10)
Ending balance		$ 433		$ 506	[3]	$ 502

[1] See Note 20, Revision of Prior Period Financial Statements

[2] See Note 20, Revision of Prior Period Financial Statements.

[3] See Note 20, Revision of Prior Period Financial Statements.