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Derivative and Hedging Activities - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Derivative [Line Items] |  |  |  |  |
Interest income | $ 326 | $ 318 | $ 1,017 | $ 967 |
Gain (losses) on interest rate derivatives designated as cash flow hedge |  |  | 4 |  |
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net | 21 |  | 21 |  |
Interest Rate Swap | Cash Flow Hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount | 1,500 |  | 1,500 |  | $ 2,250
Designated as Hedging Instrument |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount | 0 |  | 0 |  |
Interest income |  | $ 12 | 6 | $ 37 |
Designated as Hedging Instrument | Interest Rate Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount | 2,000 |  | $ 2,000 |  |
Derivative, expired period |  |  | 2022-02 |  |
LCH | Designated as Hedging Instrument | Interest Rate Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount | $ 1,500 |  | $ 1,500 |  |

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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