Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Sep. 28, 2014	Dec. 31, 2013	Sep. 28, 2014 Foreign Currency Translation	Jun. 29, 2014 Foreign Currency Translation	Mar. 30, 2014 Foreign Currency Translation	Sep. 29, 2013 Foreign Currency Translation	Jun. 30, 2013 Foreign Currency Translation	Mar. 31, 2013 Foreign Currency Translation	Sep. 28, 2014 Pension Adjustment	Jun. 29, 2014 Pension Adjustment	Mar. 30, 2014 Pension Adjustment	Sep. 29, 2013 Pension Adjustment	Jun. 30, 2013 Pension Adjustment	Mar. 31, 2013 Pension Adjustment	Sep. 28, 2014 Accumulated Other Comprehensive Income (Loss)	Jun. 29, 2014 Accumulated Other Comprehensive Income (Loss)	Mar. 30, 2014 Accumulated Other Comprehensive Income (Loss)	Sep. 29, 2013 Accumulated Other Comprehensive Income (Loss)	Jun. 30, 2013 Accumulated Other Comprehensive Income (Loss)	Mar. 31, 2013 Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ (51.0)	$ 12.0	$ 29.3	$ 33.6	$ 37.9	$ 2.0	$ (5.5)	$ 14.4	$ (25.6)	$ (25.7)	$ (25.9)	$ (24.9)	$ (25.0)	$ (25.2)	$ 3.7	$ 7.9	$ 12.0	$ (22.9)	$ (30.5)	$ (10.8)
Change in period			(44.4)	(4.3)	(4.3)	24.4	7.5	(19.9)	(10.3)	0.1	0.2	0.1	0.1	0.2	(54.7)	(4.2)	(4.1)	24.5	7.6	(19.7)
Balance at the end of the period	$ (51.0)	$ 12.0	$ (15.1)	$ 29.3	$ 33.6	$ 26.4	$ 2.0	$ (5.5)	$ (35.9)	$ (25.6)	$ (25.7)	$ (24.8)	$ (24.9)	$ (25.0)	$ (51.0)	$ 3.7	$ 7.9	$ 1.6	$ (22.9)	$ (30.5)