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Derivative Instruments And Hedging Activities (Narrative) (Details) - Interest Rate Swaps - Cash Flow Hedging - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Nov. 30, 2021
Nov. 30, 2021
Feb. 28, 2021
Designated As Hedging Instrument      
Derivative [Line Items]      
Additional reclassification from AOCL to CAF income within the next 12 months   $ 9.0  
Derivative, Notional Amount $ 4,030.0 4,030.0 $ 2,430.0
Not Designated as Hedging Instrument [Member]      
Derivative [Line Items]      
Derivative, Gain (Loss) on Derivative, Net 3.4 3.2  
Derivative, Notional Amount $ 644.2 $ 644.2 $ 255.2