Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Capital lease obligations and other borrowings	$ 18,077	$ 22,197
Debt and capital lease obligations	1,572,907	1,575,257
Less amounts due within one year	71,484	75,599
Total debt due after one year	$ 1,501,423	$ 1,499,658
2022 EUR Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	1.25%	1.25%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ 5,166	$ 5,335
Long-term Debt	$ 610,884	$ 594,465
2023 Senior notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	4.00%	4.00%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ 2,492	$ 2,590
Long-term Debt	$ 297,508	$ 297,410
2022 Senior notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	3.50%	3.50%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ 3,072	$ 3,230
Long-term Debt	$ 496,928	$ 496,770
Term Loan Facility
Debt Instrument [Line Items]
Effective interest rate (as a percent)	3.80%	3.19%
Debt Issuance Costs, Net	$ 490	$ 585
Term Loan Facility	$ 149,510	$ 164,415

Capital lease obligations and other.

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Loans Payable - Term Loan Facility (outstanding balance on our new Term Loan Facility)

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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-Publisher FASB
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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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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.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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