Variable Interest Entities - Changes in Level 3 Assets (Details) - Consolidated investment entities - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Common stocks
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	$ 0		$ 0
Total gains (losses) included in Net income	0		0
Purchases	0		0
Sales			0
Settlements	0		0
Transfers into Level 3	2		2
Transfers out of Level 3	0		0
Balance, ending	2		2
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	0		0
Syndicated loans
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	97	$ 155	64	$ 92
Total gains (losses) included in Net income	(2)		(3)	2
Purchases	8	22	23	81
Sales		(24)	(1)	(34)
Settlements	(8)	(19)	(8)	(39)
Transfers into Level 3	50	28	112	85
Transfers out of Level 3	(50)	(50)	(92)	(75)
Balance, ending	95	112	95	112
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	(2)	(1)	(3)	(1)
Other assets
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning			3	2
Total gains (losses) included in Net income			0	0
Purchases			0	0
Sales			0	0
Settlements			0	0
Transfers into Level 3			0	0
Transfers out of Level 3			(3)	(2)
Balance, ending	$ 0	$ 0	0	0
Changes in unrealized gains (losses) included in net income relating to assets held at end of period			$ 0	$ 0

Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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- Definition

Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Topic 820
-SubTopic 10
-Section 50
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