Debt - Carrying Amounts of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ (4,892)	$ (4,881)
Total debt	700,713	495,611
Less: Current maturities	(10,076)	(6,250)
Total long-term debt	690,637	489,361
Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	155,000	122,500
Euro Senior Notes, Series A due 2023
Debt Instrument [Line Items]
Long-term debt, gross	136,819	139,623
Euro Senior Notes, Series B due 2028
Debt Instrument [Line Items]
Long-term debt, gross	111,092	113,369
U.S. Senior Notes, Series A due 2022
Debt Instrument [Line Items]
Long-term debt, gross	25,000	25,000
U.S. Senior Notes, Series B due 2027
Debt Instrument [Line Items]
Long-term debt, gross	100,000	100,000
U.S. Senior Notes, Series A due 2025
Debt Instrument [Line Items]
Long-term debt, gross	50,000	0
U.S. Senior Notes, Series B due 2030
Debt Instrument [Line Items]
Long-term debt, gross	125,000	0
Other
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,694	$ 0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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 current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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