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Derivatives- Cash Flow Hedges (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2019 | Sep. 30, 2021 | Mar. 31, 2020
Interest rate contracts |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Derivative notional amount |  |  | $ 800,000,000 |
Cash flow hedge |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges | $ (54,000,000) |  |  |
Cash flow hedge | Foreign currency forward/option contracts |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Maximum length of time hedged in cash flow hedge (in months) | 36 months |  |  |
After-tax net unrealized gain (loss) anticipated to be reclassified from AOCI to the income statement within next twelve months | $ 22,000,000 |  |  |
Cash flow hedge | Interest rate contracts |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges |  | $ (143,000,000) |  |
Cash flow hedge | Interest rate contracts | Derivatives designated as hedging instruments |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Additional derivative notional |  | 743,000,000 |  |
Derivative notional amount |  | $ 700,000,000 |  |
Cash flow hedge | Treasury rate lock contracts |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Derivative notional amount |  |  |  | $ 500,000,000
Cash flow hedge | Interest rate swap and treasury lock in aggregate |  |  |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges | $ (100,000,000) |  |  |

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- Definition Amount, after tax, of accumulated gains (losses) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References No definition available. + Details
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- Definition Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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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 http://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 http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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