Stockholders' Equity - Schedule of Share Repurchases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Class of Stock [Line Items]
Number of shares repurchased (in shares)	3,134,076	2,665,000	4,463,801	11,944,177
Cash paid for shares repurchased	$ 160	$ 126	$ 210	$ 664
REH
Class of Stock [Line Items]
Number of shares repurchased (in shares)	1,948,558		1,948,558	7,864,761
Cash paid for shares repurchased	$ 100		$ 100	$ 456