Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 31, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013
Changes in accumulated other comprehensive income (loss)
Balance at the end of the period	$ (89.1)				$ 12.0
Foreign Currency Translation
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	(15.1)	29.3	33.6	37.9	26.4	2.0	(5.5)	14.4
Change in period	(37.9)	(44.4)	(4.3)	(4.3)	11.5	24.4	7.5	(19.9)
Balance at the end of the period	(53.0)	(15.1)	29.3	33.6	37.9	26.4	2.0	(5.5)
Pension Adjustment
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	(35.9)	(25.6)	(25.7)	(25.9)	(24.8)	(24.9)	(25.0)	(25.2)
Change in period	(0.2)	(10.3)	0.1	0.2	(1.1)	0.1	0.1	0.2
Balance at the end of the period	(36.1)	(35.9)	(25.6)	(25.7)	(25.9)	(24.8)	(24.9)	(25.0)
Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	(51.0)	3.7	7.9	12.0	1.6	(22.9)	(30.5)	(10.8)
Change in period	(38.1)	(54.7)	(4.2)	(4.1)	10.4	24.5	7.6	(19.7)
Balance at the end of the period	$ (89.1)	$ (51.0)	$ 3.7	$ 7.9	$ 12.0	$ 1.6	$ (22.9)	$ (30.5)