Derivative Instruments - Narrative (Details)	9 Months Ended
Sep. 30, 2015 USD ($)
Derivative [Line Items]
Aggregate termination value	$ 5,600,000.0
Interest rate swap
Derivative [Line Items]
Fair value of derivatives in a net liability position	5,600,000
Cash flow hedging \| Designated as hedging instrument
Derivative [Line Items]
Estimated gain (loss) reclassification from OCI to income	4,500,000
Cash flow hedging \| Designated as hedging instrument \| Interest rate swap
Derivative [Line Items]
Amount of hedged item	$ 170,100,000.0
Derivative, variable interest rate	LIBOR

The aggregate fair value of assets needed to immediately settle the derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4H

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624258-113959

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

+ References

No definition available.

+ Details

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- Definition

Description of the relevant terms of the derivative. Includes the type of instrument, risk being hedged, notional amount, counterparty, inception date, maturity date, relevant interest rates, strike price, cap price, and floor price.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4H

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624258-113959

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Period Type:	instant

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- Details

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- Details

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