Restructuring Activities (Restructuring Rollforward) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Restructuring Reserve [Roll Forward]
Restructuring costs - COGS	$ 0.0	$ 9.0	$ 8.3
Restructuring costs - SG&A	0.0	72.9	34.9
Cash payments related to restructuring costs	(5.1)	(64.8)	(19.4)
2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	3.3	0.0
Restructuring costs - SG&A		11.3
Cash payments related to restructuring costs	(3.3)	(4.6)
Charges against assets		(3.4)
Restructuring reserve, Ending balance	0.0	3.3	0.0
2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	1.7	2.0	0.0
Restructuring costs - SG&A		69.3	5.8
Cash payments related to restructuring costs	(1.4)	(56.3)	(1.1)
Charges against assets		(13.3)	(2.7)
Restructuring reserve, Ending balance	0.3	1.7	2.0
Severance and employee related [Member] | 2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	3.3	0.0
Restructuring costs - SG&A		7.6
Cash payments related to restructuring costs	(3.3)	(4.3)
Charges against assets		0.0
Restructuring reserve, Ending balance	0.0	3.3	0.0
Severance and employee related [Member] | 2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	0.3	0.8	0.0
Restructuring costs - SG&A		3.5	0.8
Cash payments related to restructuring costs	(0.3)	(4.0)
Restructuring reserve, Ending balance	0.0	0.3	0.8
Impairment of property, plant and equipment [Member] | 2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	0.0	0.0
Restructuring costs - SG&A		1.6
Cash payments related to restructuring costs		0.0
Charges against assets		(1.6)
Restructuring reserve, Ending balance	0.0	0.0	0.0
Impairment of property, plant and equipment [Member] | 2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	0.0	0.0	0.0
Restructuring costs - SG&A		9.4
Charges against assets		(9.4)
Restructuring reserve, Ending balance	0.0	0.0	0.0
Exit or disposal activities [Member] | 2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	0.0	0.0
Restructuring costs - SG&A		2.1
Cash payments related to restructuring costs		(0.3)
Charges against assets		(1.8)
Restructuring reserve, Ending balance	0.0	0.0	0.0
Exit or disposal activities [Member] | 2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, Beginning balance	1.4	1.2	0.0
Restructuring costs - SG&A		56.4	5.0
Cash payments related to restructuring costs	(1.1)	(52.3)	(1.1)
Charges against assets		(3.9)	(2.7)
Restructuring reserve, Ending balance	$ 0.3	$ 1.4	$ 1.2