Variable Interest Entities - Investment Entities (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2021	Dec. 31, 2020
VIEs, not primary beneficiary
Variable interest entities
Obligation to provide financial or other support to VIEs	$ 0
VIEs, not primary beneficiary \| CLOs
Variable interest entities
Maximum loss exposure	2	$ 3
Available-for-Sale securities, amortized cost	2	3
VIEs, not primary beneficiary \| Property Funds
Variable interest entities
Maximum loss exposure	23	23
Other investments	23	23
VIEs, not primary beneficiary \| Hedge Funds and other Private Funds
Variable interest entities
Maximum loss exposure	0	0
Other investments	0	0
VIEs, not primary beneficiary \| Non-U.S. Series Funds
Variable interest entities
Maximum loss exposure	26	20
Other investments	26	20
VIEs, not primary beneficiary \| Affordable Housing Partnerships and Other Real Estate Partnerships
Variable interest entities
Maximum loss exposure	151	200
Other investments	151	200
Liability related to original purchase commitments not yet remitted	9	9
Consolidated investment entities \| Unfunded commitments
Variable interest entities
Loans	$ 27	$ 13

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

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- Definition

Amount of investments classified as other.

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- Definition

Amount of commitment or contingent commitments to qualified affordable housing project investments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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