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Derivatives Derivative Instruments (Details)	Jan. 20, 2017 EUR (€)	Jan. 20, 2017 USD ($)
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 315,000,000
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	(1.65%)	(1.65%)
Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	€ 93,700,000.0	$ 100,000,000
Derivative, Term of Contract	3 years
Cross Currency Interest Rate Contract [Member] | Long [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	(1.65%)	(1.65%)
Cross Currency Interest Rate Contract [Member] | Short [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	(0.18%)	(0.18%)

X

- 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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Namespace Prefix:	invest_
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X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- 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.

+ Details

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X

- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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X

- Details

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- Details

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- Details

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- Details

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