Business Segments (Sales and Long-lived Assets) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Net sales:
Net Sales	$ 552.9	$ 526.8	$ 539.7	$ 530.5	$ 600.0	$ 555.4	$ 577.7	$ 565.0	$ 2,149.9	$ 2,298.1	$ 2,394.0
Long-lived assets:
Long-lived assets:	1,923.0				1,849.0				1,923.0	1,849.0	1,924.0
United States
Net sales:
Net Sales									1,653.6	1,805.4	1,852.0
Long-lived assets:
Long-lived assets:	1,408.1				1,332.5				1,408.1	1,332.5	1,364.7
Canada
Net sales:
Net Sales									209.2	208.8	230.1
Long-lived assets:
Long-lived assets:	273.5				249.9				273.5	249.9	310.5
United Kingdom
Net sales:
Net Sales									109.6	124.6	139.8
Long-lived assets:
Long-lived assets:	103.3				127.3				103.3	127.3	120.6
All other countries
Net sales:
Net Sales									177.5	159.3	172.1
Long-lived assets:
Long-lived assets:	$ 138.1				$ 139.3				$ 138.1	$ 139.3	$ 128.2