Accumulated Other Comprehensive Income (Loss) (Parentheticals) (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Change Related to Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Loss expected to be reclassified into earnings	$ 31.9

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

No definition available.

Name:	us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration