Amount, after accumulated amortization, of deferred policy acquisition costs and present value of future profits from insurance contract acquired in business combination.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.7)
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section S99
-Paragraph 2
-Subparagraph (2)
-URI https://asc.fasb.org/extlink&oid=122135039&loc=d3e569990-122904

Name:	us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA by Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
DAC and VOBA	$ 22,983	$ 16,061	$ 16,389
U.S.
Segment Reporting Information [Line Items]
DAC and VOBA	459	440
Asia
Segment Reporting Information [Line Items]
DAC and VOBA	13,384	9,339
Latin America
Segment Reporting Information [Line Items]
DAC and VOBA	2,211	2,021
EMEA
Segment Reporting Information [Line Items]
DAC and VOBA	1,593	1,623
MetLife Holdings
Segment Reporting Information [Line Items]
DAC and VOBA	5,308	2,607
Corporate & Other
Segment Reporting Information [Line Items]
DAC and VOBA	$ 28	$ 31