Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments (Details Textual)

v2.4.1.9
Fair Value of Financial Instruments (Details Textual) (USD $)
In Millions, unless otherwise specified
Feb. 28, 2015
Feb. 28, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, including current portion $ 7,295.6us-gaap_LongTermDebt $ 6,963.3us-gaap_LongTermDebt
Carrying Amount [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, including current portion 7,295.6us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
6,963.3us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, including current portion $ 7,378.6us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
$ 7,140.8us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember