Insurance and Contractholder Liabilities - Unpaid Claims and Claim Expenses - Other Operations - Activity (Details) - Other Operations - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
Beginning balance, including disposal groups	$ 728
Paid costs related to:
Ending balance	274	$ 697
Our interest in a joint venture in Türkiye and divested international businesses
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	497	746
Prior years	4	(1)
Total incurred	501	745
Paid costs related to:
Current year	313	526
Prior years	187	211
Total paid	500	737
Foreign currency	(28)	(31)
Divestiture of international businesses		0
Ending balance, net		384
Add: Reinsurance and other amounts recoverable		46
Ending balance		$ 430
Divested international businesses
Paid costs related to:
Divestiture of international businesses	(369)
Interest in Turkiye Joint Venture
Paid costs related to:
Ending balance, net	5
Add: Reinsurance and other amounts recoverable	1
Ending balance	$ 6