Summary of Significant Accounting Policies (Accumulated Other Comprehensive Income) (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	Dec. 29, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total stockholders’ equity		$ 1,554.4				$ 1,344.1				$ 1,554.4	$ 1,344.1	$ 1,468.5	$ 1,518.7
Other comprehensive loss before reclassifications										(22.8)	(91.8)
Amounts reclassified from AOCI										(15.2)	1.8
Net other comprehensive income (loss)	[1]									(38.0)	(90.0)	(157.7)
Loss on cash hedges:
Cost of sales		340.0	$ 317.0	$ 336.2	$ 324.8	378.4	$ 345.8	$ 357.7	$ 345.9	1,318.0	1,427.8	1,487.1
Income tax impact		7.1	$ 10.4	$ 18.0	$ 14.9	12.8	$ 13.1	$ 18.3	$ 18.5	50.4	62.7	66.5
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total stockholders’ equity		(198.8)				(174.2)				(198.8)	(174.2)	(90.6)
Other comprehensive loss before reclassifications										(24.6)	(83.6)
Amounts reclassified from AOCI										0.0	0.0
Net other comprehensive income (loss)										(24.6)	(83.6)
Cash Flow Hedges and other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total stockholders’ equity		(2.8)				(6.7)				(2.8)	(6.7)	(5.3)
Other comprehensive loss before reclassifications										1.8	(8.2)
Amounts reclassified from AOCI										2.1	6.8
Net other comprehensive income (loss)										3.9	(1.4)
Cash Flow Hedges and other | Reclassification out of Accumulated Other Comprehensive Income
Loss on cash hedges:
Cost of sales										2.8	9.1
Income tax impact										(0.7)	(2.3)
Total										2.1	6.8
Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total stockholders’ equity		(249.6)				(232.3)				(249.6)	(232.3)	(227.3)
Other comprehensive loss before reclassifications										0.0	0.0
Amounts reclassified from AOCI										(17.3)	(5.0)
Net other comprehensive income (loss)										(17.3)	(5.0)
Pension and Postretirement Benefits | Reclassification out of Accumulated Other Comprehensive Income
Loss on cash hedges:
Income tax impact										9.3	3.0
Amortization of defined benefit pension and postretirement plan items:
Amortization of prior service cost										(6.1)	(6.0)
Amortization of net actuarial loss										27.2	34.0
Pension adjustments										(47.7)	(36.0)
Total before tax										(26.6)	(8.0)
Net of tax										(17.3)	(5.0)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total stockholders’ equity		$ (451.2)				$ (413.2)				(451.2)	(413.2)	(323.2)	$ (165.5)
Net other comprehensive income (loss)										$ (38.0)	$ (90.0)	$ (157.7)

[1] Net of income tax benefit of $8.0 million in 2016, income tax benefit of $3.5 million for 2015 and income tax expense of $22.6 million for 2014.