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Derivative Instruments And Hedging Activities (Narrative) (Details) - Designated As Hedging Instrument - Interest Rate Swaps - Cash Flow Hedging - USD ($) $ in Millions | 6 Months Ended |
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Aug. 31, 2017 | Feb. 28, 2017
Derivative [Line Items] |  |
Additional reclassification as decrease from AOCL to CAF income within the next 12 months | $ 4.6 |
Derivative notional amount | $ 2,210.0 | $ 2,030.0

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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