CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Jul. 06, 2013	Dec. 31, 2012	Jun. 30, 2012
ASSETS
Property, plant and equipment, accumulated depreciation and amortization	$ 579.2	$ 565.3	$ 590.2
EQUITY:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1.0	1.0	1.0
Preferred stock, shares issued (in shares)
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200.0	200.0	200.0
Common stock, shares issued (in shares)	79.7	79.2	80.2