Derivative Instruments (Narrative) (Details) - USD ($)		3 Months Ended	9 Months Ended
		Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, Notional Amount		$ 3,179,428,000	$ 3,179,428,000	$ 2,916,181,000
Derivative Asset	[1]	38,460,000	38,460,000	41,842,000
Interest Rate Floor [Member]
Derivative [Line Items]
Derivative, Notional Amount		500,000,000	500,000,000	0
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			2,300,000
Premium paid for interest rate floor		$ 16,800,000	16,800,000
Derivative, Inception Date		Jan. 01, 2024
Derivative, Maturity Date		Jan. 01, 2030
Unrealized gain (loss) on interest rate cash flow hedges, net of tax, amount recorded in accumulated other comprehensive income			3,500,000
Monetized Interest Rate Floor [Member]
Derivative [Line Items]
Derivative, Notional Amount					$ 1,500,000,000
Derivative Asset					$ 163,200,000
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred			$ 81,000,000
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer			4 years 2 months 12 days
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 23,900,000
Interest rate swaps
Derivative [Line Items]
Derivative, Notional Amount		$ 1,980,368,000	1,980,368,000	2,229,419,000
Variation Margin Impact to Positive Fair Values of Cleared Swaps		$ (30,700,000)	$ (30,700,000)	(587,000)
Variation Margin Impact to Negative Fair Values of Cleared Swaps				$ (29,700,000)

[1] * The fair value of each class of derivative is shown in Note 11.