Derivative Financial Instruments - Schedule of Derivative Instruments in Statement of Financial Position Related to Cumulative Basis Adjustment for Fair Value Hedges (Parenthetical) (Details) $ in Billions	Sep. 30, 2023 USD ($)
Derivative Instruments, Fair Value Hedges [Line items]
Fair value of closed portfolio	$ 1.9
Amortized Cost of closed portfolio	$ 3.2