Derivative and Hedging Activities - Schedule of Cumulative Basis Adjustment for Fair Value Hedges (Details) - Loans and Leases - Fair Value Hedging $ in Millions	Dec. 31, 2021 USD ($)	[1]
Derivative [Line Items]
Carrying Amount of the Hedged Assets	$ 2,025
Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets	$ 25

[1] These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. Since the swap expired in February 2022, at June 30, 2022, the amortized cost basis of the closed portfolios used in these hedging relationships; the cumulative basis adjustments associated with these hedging relationships; and the amount of the designated hedged items were zero.