Long-Term Debt (Details Textual)	12 Months Ended
	Jan. 01, 2017 USD ($)	Jan. 03, 2016 USD ($)	Dec. 28, 2014 USD ($)	Jan. 01, 2017 GBP (£)	Jan. 01, 2017 USD ($)	Dec. 31, 2016 GBP (£)	Dec. 31, 2016 USD ($)	Nov. 30, 2015 USD ($)
Line of Credit Facility [Line Items]
Long-term debt		$ 754,100,000			$ 509,700,000
Total capital leases					7,400,000
Capital leases, current					1,300,000
Interest expense	$ 23,600,000	24,000,000	$ 19,100,000
Future minimum payments of principal in 2017					100,700,000
Future minimum payments of principal in 2018					1,100,000
Future minimum payments of principal in 2019					34,600,000
Future minimum payments of principal in 2020					108,600,000
Future minimum payments of principal in 2021					102,400,000
Future minimum payments of principal in 2022 and beyond					264,300,000
$750.0 million revolving credit facility, due December 2020, weighted average rate of 1.67% at January 3, 2016
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity							$ 750,000,000.0
Credit agreement provides for facility fees minimum	0.12%
Credit agreement provides for facility fees maximum	0.25%
Uncommitted Credit Line
Line of Credit Facility [Line Items]
Long-term debt		0			3,500,000
Letter of credit, outstanding		0
Letter of credit
Line of Credit Facility [Line Items]
Long-term debt					15,500,000
Bridge Facility
Line of Credit Facility [Line Items]
Long-term debt		0
Line of credit facility, maximum borrowing capacity | £						£ 625,000,000.0
Term loans
Line of Credit Facility [Line Items]
Long-term debt					200,000,000.0
Aggregate principal amount					$ 182,500,000.0
Senior notes
Line of Credit Facility [Line Items]
Aggregate principal amount								$ 125,000,000.0
Senior notes | 2.81% Fixed RateSenior Notes due November 2020
Line of Credit Facility [Line Items]
Long-term debt								$ 25,000,000.0
Interest rate				2.81%	2.81%			2.81%
Senior notes | 3.28% Fixed Rate Senior Notes due November 2022
Line of Credit Facility [Line Items]
Long-term debt								$ 100,000,000.0
Interest rate				3.28%	3.28%			3.28%
Line of Credit | $750.0 million revolving credit facility, due December 2020, weighted average rate of 1.67% at January 3, 2016
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 750,000,000			$ 750,000,000
Remaining borrowing capacity under credit facility					735,500,000
Line of credit facility, amount committed to specific purpose					410,000,000.0
Line of Credit | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					5,000,000.0
Line of credit facility, additional borrowing capacity					5,000,000.0
Line of Credit | Letter of credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					$ 2,000,000.0
Line of Credit | Bridge Facility
Line of Credit Facility [Line Items]
Available capacity under credit facility | £				£ 345,000,000