Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for credit loss	$ 79	$ 65
Amortized cost	7,044	7,707
Other invested assets fair value disclosure	26	30
Financial guaranty variable interest entities' assets	411	413
Assets of consolidated investment vehicles, fair value disclosure	4,978	5,363
Other assets, fair value disclosure	141	148
Financial guaranty variable interest entities' liabilities, with recourse	687	702
Financial guaranty variable interest entities' liabilities, without recourse	12	13
Liabilities of consolidated investment vehicles, fair value disclosure	$ 4,326	$ 4,431
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	58,850,144	59,013,040
Common stock, shares outstanding (in shares)	58,850,144	59,013,040
Accumulated other comprehensive income, tax provision	$ (78)	$ (84)