Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) Condensed Consolidated Statements of Operations and Comprehensive Income (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Condensed Consolidated Statements of Operations and Comprehensive Income (Parenthetical) [Abstract]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	$ 0.2	$ 0.1