Commitments and Contingencies - Product Warranty and Recall Reserves (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance, beginning of period	$ 54.9	$ 56.5	$ 54.8	$ 56.8
Warranties provided during period	5.2	7.8	11.6	15.3
Settlements made during period	(6.7)	(7.9)	(12.8)	(15.6)
Other changes in liability estimate, including expirations and acquisitions	(0.2)	1.3	(0.4)	1.2
Balance, end of period	$ 53.2	$ 57.7	$ 53.2	$ 57.7