Held-For-Sale Classification - Schedule of Disposal Groups (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets:
Total assets held for sale	$ 2,388	$ 2,268
Liabilities:
Total liabilities held for sale	1,813	1,775
Assets held-for-sale
Assets:
Bonds available for sale	175	181
Other invested assets	167	67
Short-term investments	25	12
Cash	1	3
Accrued investment income	4	3
Premiums and other receivables, net of allowance for credit losses and disputes	145	125
Reinsurance assets - other, net of allowance for credit losses and disputes	887	902
Deferred income taxes	47	47
Deferred policy acquisition costs	842	814
Other assets, net of allowance for credit losses	95	114
Total assets held for sale	2,388	2,268
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	24	19
Unearned premiums	73	61
Future policy benefits for life and accident and health insurance contracts	842	838
Other liabilities	874	857
Total liabilities held for sale	1,813	1,775
AIG Life | Assets held-for-sale
Assets:
Bonds available for sale	160	167
Other invested assets	0	0
Short-term investments	24	11
Cash	0	3
Accrued investment income	3	3
Premiums and other receivables, net of allowance for credit losses and disputes	131	116
Reinsurance assets - other, net of allowance for credit losses and disputes	882	899
Deferred income taxes	47	47
Deferred policy acquisition costs	841	814
Other assets, net of allowance for credit losses	82	83
Total assets held for sale	2,170	2,143
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	0	0
Unearned premiums	62	54
Future policy benefits for life and accident and health insurance contracts	842	838
Other liabilities	869	854
Total liabilities held for sale	1,773	1,746
Goodwill	23	23
Intangible assets	3	3
Other | Assets held-for-sale
Assets:
Bonds available for sale	15	14
Other invested assets	167	67
Short-term investments	1	1
Cash	1	0
Accrued investment income	1	0
Premiums and other receivables, net of allowance for credit losses and disputes	14	9
Reinsurance assets - other, net of allowance for credit losses and disputes	5	3
Deferred income taxes	0	0
Deferred policy acquisition costs	1	0
Other assets, net of allowance for credit losses	13	31
Total assets held for sale	218	125
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	24	19
Unearned premiums	11	7
Future policy benefits for life and accident and health insurance contracts	0	0
Other liabilities	5	3
Total liabilities held for sale	$ 40	$ 29