Insurance and Contractholder Liabilities - Unpaid Claims and Claim Expenses - Other Operations - Activity (Details) - Other Operations - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
Beginning balance, including disposal groups	$ 728
Paid costs related to:
Ending balance		$ 722
Ending balance, including disposal groups	701
International businesses held for sale and our interest in a joint venture in Türkiye
Liability for Claims and Claims Adjustment Expense [Line Items]
Beginning balance		452
Less: Reinsurance and other amounts recoverable		45
Beginning balance, net		407
Beginning balance, including disposal groups	447
Less: Reinsurance, including disposal groups	46
Beginning balance, net, including disposal groups	401
Incurred claims related to:
Current year	490	501
Prior years	4	(4)
Total incurred	494	497
Paid costs related to:
Current year	306	314
Prior years	187	181
Total paid	493	495
Foreign currency	(28)	(16)
Ending balance, net		393
Add: Reinsurance and other amounts recoverable		45
Ending balance		$ 438
Ending balance, net, including disposal groups	374
Add: Reinsurance, including disposal groups	38
Ending balance, including disposal groups	$ 412