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Derivatives - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 10,755,000,000	$ 11,224,000,000
Derivative, Collateral, Right to Reclaim Cash	1,000,000	2,000,000
Cash collateral held	56,000,000	7,000,000
Securities collateral held or repledged	1,000,000	5,000,000
Collateral Securities Repledged, Delivered, or Used	0	0
Asset Pledged as Collateral
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset	8,000,000	48,000,000
Over the Counter [Member] | Asset Pledged as Collateral
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset	57,000,000	82,000,000
Collateral Pledged
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Collateral, Right to Reclaim Cash	16,000,000	12,000,000
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net reclassifications from AOCI to earnings resulting from the discontinuance of cash-flow hedges due to forecasted transactions that were no longer probable of occurring	0	0	$ 0
Accumulated Other Comprehensive Income (Loss), net of tax
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Deferred net gains on derivative instruments recorded in AOCI that are expected to be reclassified to earnings during the next twelve months	3,000,000
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	8,032,000,000	8,447,000,000
Interest rate swaps | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 6,600,000,000	$ 7,200,000,000

X

- 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.

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- Definition

The carrying value as of the balance sheet date of securities received as collateral from a counterparty that were re-pledged, sold, delivered or otherwise reused by the entity.

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Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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Amount of right to receive securities collateral under master netting arrangements that have not been offset against derivative liabilities.

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Nominal or face amount used to calculate payment on derivative.

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Fair value of collateral permitted, by contact or custom, to be sold or re-pledged.

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The amount of loss reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

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