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Derivative Instruments And Hedging Activities (Narrative) (Details) - Interest Rate Swaps - Cash Flow Hedging - USD ($)
$ in Millions
3 Months Ended
May 31, 2021
Feb. 28, 2021
Designated As Hedging Instrument    
Derivative [Line Items]    
Additional reclassification from AOCL to CAF income within the next 12 months $ 15.5  
Derivative, Notional Amount 2,860.0 $ 2,430.0
Not Designated as Hedging Instrument [Member]    
Derivative [Line Items]    
Derivative, Gain (Loss) on Derivative, Net (0.3)  
Derivative, Notional Amount $ 358.3 $ 255.2