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Financial Instruments - Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not designated as hedging instrument - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net gain (loss) from investment activities
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	$ (214)	$ (1,016)	$ (131)
Equity contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	(201)	(903)	456
Credit contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	(29)	(87)	(586)
Commodity contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	$ 16	$ (26)	$ (1)
[1] Gains (losses) recognized on derivatives are classified in net (loss) gain from investment activities in our consolidated statements of operations for our Investment segment.

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CC
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CC

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 40
-Name Accounting Standards Codification
-Section 50
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