CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net gain (loss) arising during the period, tax	$ 0.2	$ 1.0	$ (1.0)
Reclassification adjustments into cost of goods sold, tax	(0.6)	1.3	(1.4)
Unrealized loss on interest rate swap, tax	(0.8)	0.5	0
Actuarial loss arising during the period, tax	(33.1)	16.0	17.0
Amortization of prior actuarial losses, tax	(10.7)	(7.3)	(4.2)
Amortization of prior service cost included in net periodic benefit costs, tax	$ 0	$ 0	$ (0.1)