Amount of liability due to policyholder for deposit held under long-duration contract issued by insurance entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 25
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124504495&loc=d3e13193-158430

Name:	us-gaap_PolicyholderContractDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Reserve for Future Policy Benefits and Contractholder Funds - Contractholder funds (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Key contract provisions relating to contractholder funds:
Policyholder Contract Deposit	$ 908	$ 857	$ 915	$ 898
Interest Sensitive Life Insurance
Key contract provisions relating to contractholder funds:
Policyholder Contract Deposit	$ 853	$ 857