Amount of unrealized gain (loss) on investment in debt and equity securities.

No definition available.

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- Definition

Fair value of obligations incurred from short sales.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 35
-Paragraph 1
-Subparagraph (b)
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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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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.

+ References

No definition available.

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Investments - Investment Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Schedule of Investments [Line Items]
Investments	$ 10,903		$ 10,903		$ 8,913
Securities sold, not yet purchased, at fair value	4,231		4,231		2,521
Investment Segment
Schedule of Investments [Line Items]
Investments	10,603		10,603		8,239
Securities sold, not yet purchased, at fair value	4,231		4,231		2,521
Unrealized gain (loss) on debt and equity securities still held	491	$ 2,566	1,593	$ (1,066)
Investment Segment \| Equity securities:
Schedule of Investments [Line Items]
Investments	10,487		10,487		8,118
Investment Segment \| Consumer, non-cyclical
Schedule of Investments [Line Items]
Investments	566		566		1,548
Securities sold, not yet purchased, at fair value	202		202		424
Investment Segment \| Consumer, cyclical
Schedule of Investments [Line Items]
Investments	2,660		2,660		2,073
Securities sold, not yet purchased, at fair value	607		607		572
Investment Segment \| Energy
Schedule of Investments [Line Items]
Investments	3,237		3,237		2,654
Securities sold, not yet purchased, at fair value	2,143		2,143		1,476
Investment Segment \| Utilities
Schedule of Investments [Line Items]
Investments	706		706		107
Securities sold, not yet purchased, at fair value	422		422		49
Investment Segment \| Healthcare
Schedule of Investments [Line Items]
Investments	1,025		1,025
Securities sold, not yet purchased, at fair value	674		674
Investment Segment \| Technology
Schedule of Investments [Line Items]
Investments	1,848		1,848		1,578
Investment Segment \| Materials
Schedule of Investments [Line Items]
Investments	187		187
Securities sold, not yet purchased, at fair value	183		183
Investment Segment \| Industrial
Schedule of Investments [Line Items]
Investments	258		258		158
Investment Segment \| Corporate debt securities
Schedule of Investments [Line Items]
Investments	$ 116		$ 116		$ 121