Pension Plans and Postretirement Benefits (Changes in Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016
Domestic
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of period	$ 890.4	$ 957.5
Actual return on plan assets	52.9	(12.1)
Employer contribution - other benefit plan	2.1	2.2
Foreign currency changes	0.0	0.0
Benefits paid	(88.3)	(57.2)
Other	0.0	0.0
Fair value of plan assets, end of period	857.1	890.4
Foreign
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of period	43.8	47.6
Actual return on plan assets	5.8	0.7
Employer contribution - other benefit plan	3.4	0.7
Foreign currency changes	(5.9)	(2.4)
Benefits paid	(1.8)	(2.8)
Other	(3.2)	0.0
Fair value of plan assets, end of period	$ 42.1	$ 43.8