Assets and Liabilities of Businesses Held for Sale (Details) - USD ($) $ in Millions	Dec. 31, 2021	Oct. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Separate account assets	$ 878
Assets of businesses held for sale	10,057		$ 0
Insurance and contractholder liabilities	4,644
Deferred tax liabilities, net	449
Total liabilities of business held for sale	6,423		$ 0
International life, accident and supplemental benefits businesses | Held-for-Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price		$ 5,750
Cash and cash equivalents	406
Investments	5,109
Deferred policy acquisition costs	2,755
Separate account assets	878
Goodwill, other intangible assets and all other assets	909
Assets of businesses held for sale	10,057
Insurance and contractholder liabilities	4,644
Accounts payable, accrued expenses and other liabilities	452
Deferred tax liabilities, net	449
Separate account liabilities	878
Total liabilities of business held for sale	6,423
Redeemable noncontrolling interests	24
Gross unrealized appreciation on securities and derivatives	137
Gross translation loss on foreign currencies	$ 209