Long-Term Debt (Narrative) (Details) € in Millions, $ in Millions	12 Months Ended
	Jan. 03, 2020 USD ($)	Sep. 27, 2019 USD ($) loan	Sep. 27, 2019 EUR (€) loan	Dec. 28, 2018 USD ($)	May 15, 2018 USD ($)
Uncommitted Revolving Credit Facilities $75 million [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Current Borrowing Capacity		$ 75.0
Number Of Revolving Loan Facilities | loan		2	2
Uncommitted Revolving Credit Facilities 100 million euros [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Current Borrowing Capacity | €			€ 100.0
Number Of Revolving Loan Facilities | loan		1	1
Uncommitted Facilities [Member]
Debt Instrument [Line Items]
Short-term Debt, Weighted Average Interest Rate	1.54%			2.16%
Promissory Notes And Other [Member]
Debt Instrument [Line Items]
Notes Payable	$ 0.3			$ 1.0
Two Thousand Eighteen Credit Facility [Member]
Debt Instrument [Line Items]
Covenant Ratio - Minimum Interest Coverage	3.50
Current Maximum Leverage Ratio	3.75
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	0.50%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Reserve Adjusted One Month LIBOR [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	1 month
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted LIBOR Rate One Month Interest Period [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.00%
Interest Maturity Period, Variable Rate	1 month
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted LIBOR Rate One Month Interest Period [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit facility interest margin on stated base rate	0.00%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted LIBOR Rate One Month Interest Period [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility interest margin on stated base rate	0.875%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted LIBOR Rate Two Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	2 months
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted LIBOR Rate Three Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	3 months
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted LIBOR Rate Six Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	6 months
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjustment LIBOR Rate One, Two, Three Or Six Month Interest Periods [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit facility interest margin on stated base rate	1.00%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjustment LIBOR Rate One, Two, Three Or Six Month Interest Periods [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility interest margin on stated base rate	1.875%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted EURIBOR Rate One Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	1 month
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted EURIBOR Rate Two Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	2 months
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted EURIBOR Rate Three Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	3 months
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted EURIBOR Rate Six Month Interest Period [Member]
Debt Instrument [Line Items]
Interest Maturity Period, Variable Rate	6 months
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted EURIBOR Rate, One, Two, Three Or Six Months Interest Periods [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit facility interest margin on stated base rate	1.00%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Adjusted EURIBOR Rate, One, Two, Three Or Six Months Interest Periods [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility interest margin on stated base rate	1.875%
Two Thousand Eighteen Credit Facility [Member] | Revolving Credit Facility [Member] | Alternative Base Rate
Debt Instrument [Line Items]
Interest Payable Periods On Borrowings	3 months
Two Thousand Eighteen Credit Facility [Member] | JPMorgan Chase Bank, N.A. [Member] | Unsecured Debt [Member] | Revolving Credit Facility, due May 2023 [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Current Borrowing Capacity					$ 1,250.0
Two Thousand Eighteen Credit Facility [Member] | JPMorgan Chase Bank, N.A. [Member] | Unsecured Debt [Member] | Delayed Draw Term Loan [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Current Borrowing Capacity					500.0
Two Thousand Eighteen Credit Facility [Member] | JPMorgan Chase Bank, N.A. [Member] | Unsecured Debt [Member] | Additional Loan Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Current Borrowing Capacity					500.0
Two Thousand Eighteen Credit Facility [Member] | JPMorgan Chase Bank, N.A. [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Current Borrowing Capacity					$ 1,750.0
Two Thousand Twenty Three Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.15%
Two Thousand Twenty Eight Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.90%
Two Thousand Twenty Four Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.75%
Short-term Debt [Member] | Promissory Notes And Other [Member]
Debt Instrument [Line Items]
Notes Payable	$ 0.3			$ 0.3