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Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Balance Sheets) (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Derivative [Line Items]      
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments $ 889 $ 1,137 $ 1
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments 26,040 26,750 38,091
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments 1,028 435 290
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments 639 791 418
Interest Rate Swap Agreements [Member] | Other Non-Current Assets [Member]      
Derivative [Line Items]      
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments 0 0 0
Interest Rate Swap Agreements [Member] | Other Long-Term Liabilities [Member]      
Derivative [Line Items]      
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments 22,888 25,719 37,109
Forward Foreign Currency Exchange Contract [Member] | Other Current Assets [Member]      
Derivative [Line Items]      
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments 889 1,137 1
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments 1,028 435 290
Forward Foreign Currency Exchange Contract [Member] | Accounts Payable and Accrued Expenses [Member]      
Derivative [Line Items]      
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments 3,152 1,031 982
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments $ 639 $ 791 $ 418