Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Subparagraph (SX 210.5-02.22(a)(1))

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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

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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-Subparagraph (SX 210.5-02.22(b))

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Fair value of the amount outstanding under the credit facility.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Indebtedness (Narrative) (Details)	6 Months Ended
Indebtedness (Narrative) (Details)	Jun. 30, 2015 USD ($)	Jun. 30, 2015 EUR (€)	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)
Debt Instrument [Line Items]
Credit facility	$ 620,000,000		$ 404,400,000
Remaining borrowing capacity on line of credit facility	535,000,000		750,600,000
Debt instrument, unused borrowing capacity \| €				€ 200,000,000.0
Outstanding letters of credit	$ 19,900,000		$ 18,500,000
4 1/2% Senior Unsecured Term Loan Due 2016 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, percent	4.50%	4.50%	4.50%	4.50%
Debt instrument, amount	$ 222,900,000	€ 200,000,000.0
Senior notes	$ 222,900,000		$ 242,000,000
Senior Unsecured Term Loan Due January 15, 2020, 1.056% [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, percent	1.056%	1.056%	1.056%	1.056%
Senior notes	$ 222,900,000	€ 200,000,000.0	$ 0
5 7/8% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, percent	5.875%	5.875%	5.875%	5.875%
Debt instrument, amount	$ 300,000,000.00
Senior notes	$ 300,000,000		$ 300,000,000
5 7/8% Senior Notes due 2021 [Member] \| Interest Accrual, Option Two [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.50%
Revolving Credit Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity on line of credit facility	$ 800,000,000
Fair value of amount outstanding	$ 265,000,000		49,400,000
Amended and Restated Credit Facility Agreement [Member] \| Line of Credit [Member] \| Interest Accrual, Option Two [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.50%
Amended and Restated Credit Facility Agreement [Member] \| Line of Credit [Member] \| Interest Accrual, Option Three [Member]
Debt Instrument [Line Items]
Margin on variable rate	1.00%
Amended and Restated Credit Facility Agreement [Member] \| Line of Credit [Member] \| Minimum [Member] \| Interest Accrual, Option One [Member]
Debt Instrument [Line Items]
Margin on variable rate	1.00%
Amended and Restated Credit Facility Agreement [Member] \| Line of Credit [Member] \| Minimum [Member] \| Interest Accrual, Option Three [Member] \| Variable Basis, Additional Margin [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.00%
Amended and Restated Credit Facility Agreement [Member] \| Line of Credit [Member] \| Maximum [Member] \| Interest Accrual, Option One [Member]
Debt Instrument [Line Items]
Margin on variable rate	1.75%
Amended and Restated Credit Facility Agreement [Member] \| Line of Credit [Member] \| Maximum [Member] \| Interest Accrual, Option Three [Member] \| Variable Basis, Additional Margin [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.25%
Amended and Restated Credit Facility Agreement [Member] \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity on line of credit facility	$ 355,000,000
Fair value of amount outstanding	$ 355,000,000		$ 355,000,000
Prior Credit Facility Agreement [Member] \| Line of Credit [Member] \| Interest Accrual, Option Two [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.50%
Prior Credit Facility Agreement [Member] \| Line of Credit [Member] \| Interest Accrual, Option Three [Member]
Debt Instrument [Line Items]
Margin on variable rate	1.00%
Prior Credit Facility Agreement [Member] \| Line of Credit [Member] \| Minimum [Member] \| Interest Accrual, Option One [Member]
Debt Instrument [Line Items]
Margin on variable rate	1.00%
Prior Credit Facility Agreement [Member] \| Line of Credit [Member] \| Minimum [Member] \| Interest Accrual, Option Three [Member] \| Variable Basis, Additional Margin [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.00%
Prior Credit Facility Agreement [Member] \| Line of Credit [Member] \| Maximum [Member] \| Interest Accrual, Option One [Member]
Debt Instrument [Line Items]
Margin on variable rate	2.00%
Prior Credit Facility Agreement [Member] \| Line of Credit [Member] \| Maximum [Member] \| Interest Accrual, Option Three [Member] \| Variable Basis, Additional Margin [Member]
Debt Instrument [Line Items]
Margin on variable rate	0.50%