Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Collateral cash payables	$ 483		$ 380
Total trading revenues	27	$ 61
Hedged amount of foreign currency denominated loans	14		9
Derivative assets	546		458
Derivative liability	698		929
Additional Derivative Agreements | Derivative Instruments With Adjustable Collateral Posting Thresholds
Derivative Instruments, Gain (Loss) [Line Items]
Net fair value of derivative assets with adjustable posting thresholds	7		5
Net fair value of derivative liabilities with adjustable posting thresholds	201		268
Collateral received	94		106
Securities posted collateral	94		61
Additional Derivative Agreements | Derivative Instruments With Accelerated Termination Provisions
Derivative Instruments, Gain (Loss) [Line Items]
Net fair value of derivative assets with adjustable posting thresholds	476		378
Net fair value of derivative liabilities with adjustable posting thresholds	201		268
Collateral received	574		479
Securities posted collateral	94		61
Credit Risk Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount	312		242
Derivative liability, notional amount	831		742
Visa Class B Shares
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities related to sale	21		27
Derivative valuation adjustment			22
Counterparties
Derivative Instruments, Gain (Loss) [Line Items]
Collateral cash receivables	136		159
Collateral cash payables	$ 26		$ 42