Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Income (Loss) (Parentheticals) (Detail)

v2.4.1.9
Accumulated Other Comprehensive Income (Loss) (Parentheticals) (Detail) (Change Related to Cash Flow Hedges, USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Change Related to Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Amount expected to be reclassified into earnings $ 102.7us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember