Financial Derivatives - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Derivative [Line Items]
Gain expected to be reclassified from AOCI to earnings over next 12 months	$ 12,900,000		$ 12,900,000
Gain (loss) from interest rate swaps designated as cash flow hedges reclassified to earnings	0	$ 0	0	$ 0
Financial derivatives in net payable position	0		0		$ 0
Notional amount	22,402,528,000		22,402,528,000		17,547,367,000
Exchange Cleared
Derivative [Line Items]
Notional amount	18,500,000,000		18,500,000,000		14,900,000,000
Interest Rate Swap
Derivative [Line Items]
Notional amount	22,400,000,000		22,400,000,000		17,500,000,000
Cleared Swaps
Derivative [Line Items]
Accrued interest on cleared swaps	4,300,000		4,300,000		3,000,000
Uncleared Swaps
Derivative [Line Items]
Accrued interest payable	$ 1,500,000		$ 1,500,000		$ 1,900,000