Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Condensed Statement of Income Captions [Line Items]
Reclassification adjustments into expense, tax amount	$ 0.0	$ (2.0)
Actuarial loss arising during the period, tax amount	(11.2)	8.2	$ (19.6)
Amortization of prior actuarial losses, tax amount	1.7	7.3	2.6
Settlement gain included in net income, tax amount	0.0	0.0	(0.3)
Foreign exchange contracts [Member]
Condensed Statement of Income Captions [Line Items]
Unrealized loss on derivatives, tax amount	(3.0)	(4.9)	(4.1)
Interest rate swap [Member]
Condensed Statement of Income Captions [Line Items]
Unrealized loss on derivatives, tax amount	1.1	2.2	0.1
Cash flow hedges adjustments [Member] | Foreign exchange contracts [Member]
Condensed Statement of Income Captions [Line Items]
Reclassification adjustments into expense, tax amount	2.2	6.0	(0.2)
Cash flow hedges adjustments [Member] | Interest rate swap [Member]
Condensed Statement of Income Captions [Line Items]
Reclassification adjustments into expense, tax amount	$ (0.5)	$ (0.7)	$ 0.0