Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	8. Goodwill and Intangible Assets The Company had goodwill of $141 and $120, and intangible assets of $30 and $8 as of September 30, 2023 and December 31, 2022, respectively. In connection with the Rushmore Transaction during the second quarter of 2023, the Company recorded $23 of intangible assets, which primarily consist of subservicing customer relationships. In connection with the Roosevelt Transaction during the third quarter of 2023, the Company recorded $4 of intangible assets and $21 of goodwill. See Note 2, Acquisitions, for further details. Goodwill and intangible assets are included in “other assets” within the condensed consolidated balance sheets.