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Derivative Instruments - Summary of Location and Amount of Gains and Losses of Derivative Contracts (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 29 | $ (11) | $ 86 | $ 14
Derivative, Gain (Loss) on Derivatives, Total Net | 307 | (72) | 376 | 49
Net gains (losses) on derivative contracts [Domain] | Credit Derivatives [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 1 | 0 |  |
Net gains (losses) on derivative contracts [Domain] | Interest Rate Swap [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 17 | (7) | 47 | 10
Net gains (losses) on derivative contracts [Domain] | Futures Contracts [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 11 | (5) | 37 | 4
Net gains (losses) on derivative contracts [Domain] | Warrants [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 1 | 0 | 1 | 0
Income Loss On Variable Interest Entities [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 278 | (61) | 289 | 35
Income Loss On Variable Interest Entities [Member] | Interest Rate Swap [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 264 | (60) | 269 | 37
Income Loss On Variable Interest Entities [Member] | Currency Swaps [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 14 | $ (1) | 20 | (3)
Net Change In Fair Value Of Credit Derivatives [Member] | Credit Derivatives [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  |  | $ 0 | $ 0

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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