Income Taxes - Schedule of components of the net deferred tax asset (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Losses and tax credit carryforwards	$ 6,868	$ 7,291
Basis differences on investments	2,652	2,944
Fortitude Re funds withheld embedded derivative	0	543
Life policy reserves	3,697	3,751
Accruals not currently deductible, and other	389	634
Loss reserve discount	352	455
Loan loss and other reserves	62	509
Unearned premium reserve reduction	294	283
Fixed assets and intangible assets	1,081	1,262
Unrealized losses related to available for sale debt securities	5,595	0
Other	498	247
Employee benefits	382	407
Total deferred tax assets	21,870	18,326
Deferred tax liabilities:
Investments in foreign subsidiaries	(41)	(15)
Deferred policy acquisition costs	(1,868)	(2,054)
Unrealized gains related to available for sale debt securities	0	(2,791)
Fortitude Re funds withheld embedded derivative	(862)	0
Other	0	0
Deferred tax liabilities	(2,771)	(4,860)
Net deferred tax assets before valuation allowance	19,099	13,466
Valuation allowance	(4,250)	(1,987)
Net deferred tax assets (liabilities)	$ 14,849	$ 11,479