Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020
Derivative [Line Items]
Derivative, Description of Terms		As of December 31, 2023, the Company held four interest rate floors indexed to 1-month SOFR to hedge the risk of declining interest rates on certain floating rate commercial loans. The floors have a combined notional value of $2.0 billion and are forward-starting. Each of the four interest rate floors has a six-year term and a notional amount of $500 million. In the event that the index rate falls below zero, the maximum rate that the Company can earn on the notional amount of each floor is limited to the strike rate
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge		7 years
Derivative, Notional Amount		$ 5,194,716	$ 3,742,521
Derivative Assets	[1]	116,876	60,492
Interest Rate Floor [Member]
Derivative [Line Items]
Derivative, Premium Paid		90,200
Net unrealized gain (loss) on interest rate floors		1,700
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		10,800
Derivative, Notional Amount		2,000,000	1,000,000
Monetized Interest Rate Floor [Member]
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		22,200
Derivative, Notional Amount				$ 1,500,000
Derivative Assets				$ 163,200
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred		$ 51,300
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer		3 years
Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 2,166,393	1,981,821
Variation Margin Impact to Positive Fair Values of Cleared Swaps		0	$ (27,800)
2023 Interest Rate Floors
Derivative [Line Items]
Derivative, Premium Paid		$ 54,400

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