Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Foreign Currency Translation	Mar. 31, 2013 Foreign Currency Translation	Jul. 01, 2012 Foreign Currency Translation	Apr. 01, 2012 Foreign Currency Translation	Jun. 30, 2013 Pension Adjustment	Mar. 31, 2013 Pension Adjustment	Jul. 01, 2012 Pension Adjustment	Apr. 01, 2012 Pension Adjustment	Jun. 30, 2013 Accumulated Other Comprehensive Income (Loss)	Mar. 31, 2013 Accumulated Other Comprehensive Income (Loss)	Jul. 01, 2012 Accumulated Other Comprehensive Income (Loss)	Apr. 01, 2012 Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ (22.9)	$ (10.8)	$ (5.5)	$ 14.4	$ 16.6	$ 0.1	$ (25.0)	$ (25.2)	$ (18.9)	$ (19.1)	$ (30.5)	$ (10.8)	$ (2.3)	$ (19.0)
Change in period			7.5	(19.9)	(39.7)	16.5	0.1	0.2	0.1	0.2	7.6	(19.7)	(39.6)	16.7
Balance at the ending of the period	$ (22.9)	$ (10.8)	$ 2.0	$ (5.5)	$ (23.1)	$ 16.6	$ (24.9)	$ (25.0)	$ (18.8)	$ (18.9)	$ (22.9)	$ (30.5)	$ (41.9)	$ (2.3)