Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, Notional Amount		$ 3,742,521	$ 2,916,181
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge		6 years
Derivative Assets	[1]	$ 60,492	41,842
Interest Rate Floor [Member]
Derivative [Line Items]
Derivative, Notional Amount		1,000,000	0
Premium paid for interest rate floor		35,800
Net unrealized gain (loss) on interest rate floors		2,400
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		$ 4,900
Interest Rate Floor [Member] | September 19, 2022
Derivative [Line Items]
Derivative, Description of Terms		The first floor has a purchased strike rate of 2.50%, is forward-starting beginning on January 1, 2024 and matures on January 1, 2030. In the event that the index rate falls below zero, the maximum rate spread the Company can earn on the notional amount is limited to 2.50%.
Interest Rate Floor [Member] | October 19, 2022
Derivative [Line Items]
Derivative, Description of Terms		The second floor has a purchased strike rate of 3.00%, is forward-starting beginning on April 1, 2024 and matures on April 1, 2030. In the event that the index rate on the second floor falls below zero, the maximum rate the Company can earn on the notional amount of the second floor is limited to 3.00%.
Monetized Interest Rate Floor [Member]
Derivative [Line Items]
Derivative, Notional Amount				$ 1,500,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		$ 23,600
Derivative Assets				$ 163,200
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred		$ 74,900
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer		4 years
Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 1,981,821	2,229,419
Variation Margin Impact to Positive Fair Values of Cleared Swaps		(27,800)	(587)
Variation Margin Impact to Negative Fair Values of Cleared Swaps		$ 0	$ (29,700)

[1] *The fair value of each class of derivative is shown in Note 19.