Held-For-Sale Classification - Schedule of Disposal Groups (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets:
Assets held for sale	$ 14,018	$ 0
Liabilities:
Liabilities held for sale	10,117	$ 0
Assets held-for-sale
Assets:
Bonds available for sale	3,959
Other invested assets	5
Restricted cash included in short-term investments	262
Short-term investments, including restricted cash of	1,586
Cash	193
Accrued investment income	24
Premiums and other receivables, net of allowance for credit losses and disputes	3,337
Reinsurance assets - other, net of allowance for credit losses and disputes	2,553
Deferred income taxes	59
Deferred policy acquisition costs	1,378
Other assets, net of allowance for credit losses(a)	924
Assets held for sale	14,018
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	5,046
Unearned premiums	2,575
Future policy benefits for life and accident and health insurance contracts	592
Other policyholder funds	40
Other liabilities	1,864
Liabilities held for sale	10,117
Validus Re | Assets held-for-sale
Assets:
Bonds available for sale	3,822
Other invested assets	5
Short-term investments, including restricted cash of	1,478
Cash	176
Accrued investment income	21
Premiums and other receivables, net of allowance for credit losses and disputes	3,195
Reinsurance assets - other, net of allowance for credit losses and disputes	1,759
Deferred income taxes	23
Deferred policy acquisition costs	623
Other assets, net of allowance for credit losses(a)	676
Assets held for sale	11,778
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	5,046
Unearned premiums	2,504
Future policy benefits for life and accident and health insurance contracts	0
Other policyholder funds	0
Other liabilities	910
Liabilities held for sale	8,460
Goodwill	318
Intangible assets	235
AIG Life | Assets held-for-sale
Assets:
Bonds available for sale	137
Other invested assets	0
Short-term investments, including restricted cash of	32
Cash	2
Accrued investment income	3
Premiums and other receivables, net of allowance for credit losses and disputes	127
Reinsurance assets - other, net of allowance for credit losses and disputes	794
Deferred income taxes	35
Deferred policy acquisition costs	755
Other assets, net of allowance for credit losses(a)	109
Assets held for sale	1,994
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	0
Unearned premiums	71
Future policy benefits for life and accident and health insurance contracts	592
Other policyholder funds	0
Other liabilities	918
Liabilities held for sale	1,581
Goodwill	23
Intangible assets	3
Laya and Other | Assets held-for-sale
Assets:
Bonds available for sale	0
Other invested assets	0
Short-term investments, including restricted cash of	76
Cash	15
Accrued investment income	0
Premiums and other receivables, net of allowance for credit losses and disputes	15
Reinsurance assets - other, net of allowance for credit losses and disputes	0
Deferred income taxes	1
Deferred policy acquisition costs	0
Other assets, net of allowance for credit losses(a)	139
Assets held for sale	246
Liabilities:
Liability for unpaid losses and loss adjustment expenses, including allowance for credit losses	0
Unearned premiums	0
Future policy benefits for life and accident and health insurance contracts	0
Other policyholder funds	40
Other liabilities	36
Liabilities held for sale	76
Goodwill	30
Intangible assets	$ 10