Derivative Financial Instruments (Schedule Of Cash Flow Hedging Instruments) (Detail) - Interest rate derivatives designated as Cash Flow Hedges - Designated as hedging instrument $ in Thousands	Sep. 30, 2021 USD ($)
October 2021
Derivative [Line Items]
Notional Amount	$ 25,000
Fair Value - Asset (Liability)	(9)
November 2021
Derivative [Line Items]
Notional Amount	20,000
Fair Value - Asset (Liability)	(65)
December 2021
Derivative [Line Items]
Notional Amount	165,000
Fair Value - Asset (Liability)	(812)
March 2022
Derivative [Line Items]
Notional Amount	500,000
Fair Value - Asset (Liability)	(110)
May 2022
Derivative [Line Items]
Notional Amount	370,000
Fair Value - Asset (Liability)	(4,335)
June 2022
Derivative [Line Items]
Notional Amount	160,000
Fair Value - Asset (Liability)	(2,156)
July 2022
Derivative [Line Items]
Notional Amount	230,000
Fair Value - Asset (Liability)	(3,218)
August 2022
Derivative [Line Items]
Notional Amount	235,000
Fair Value - Asset (Liability)	(3,795)
March 2023
Derivative [Line Items]
Notional Amount	250,000
Fair Value - Asset (Liability)	(133)
April 2024
Derivative [Line Items]
Notional Amount	250,000
Fair Value - Asset (Liability)	784
July 2027
Derivative [Line Items]
Notional Amount	1,000,000
Fair Value - Asset (Liability)	36,745
September 2023
Derivative [Line Items]
Notional Amount	85,714
Fair Value - Asset (Liability)	(3,421)
Total Cash Flow Hedges
Derivative [Line Items]
Notional Amount	3,290,714
Fair Value - Asset (Liability)	$ 19,475