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Derivative Financial Instruments - Schedule of Gains (Losses) from Valuation and Settlements Reported on Derivatives Not Designated as Accounting Hedges (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | $ (30) | $ 8
Net gains (losses) on investments and derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (19) | (8)
Operating costs and expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (11) | 16
Interest rate contracts |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (1) | (7)
Interest rate contracts | Net gains (losses) on investments and derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (1) | (7)
Interest rate contracts | Operating costs and expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | 0 | 0
Equity and index contracts |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (11) | 3
Equity and index contracts | Net gains (losses) on investments and derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | 0 | (11)
Equity and index contracts | Operating costs and expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (11) | 14
Contingent consideration |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives |  | 2
Contingent consideration | Net gains (losses) on investments and derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives |  | 0
Contingent consideration | Operating costs and expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives |  | 2
Foreign currency contracts |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (18) | 11
Foreign currency contracts | Net gains (losses) on investments and derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | (18) | 11
Foreign currency contracts | Operating costs and expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives | $ 0 | 0
Credit default contracts |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives |  | (1)
Credit default contracts | Net gains (losses) on investments and derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives |  | (1)
Credit default contracts | Operating costs and expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gains (losses) from valuation and settlements reported on derivatives |  | $ 0

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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 -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E + Details
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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 + Details
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