Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Goodwill (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Future sales volume and product mix used to forecast		10 years
Goodwill impairment			$ 634
Annuities [Member]
Goodwill impairment
Retirement Plan Services [Member]
Goodwill impairment
Life Insurance [Member]
Goodwill impairment	$ 634		634
Group Protection [Member]
Goodwill impairment