Changes in Product Support Liabilities (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Product Warranties Disclosures [Abstract]
Beginning balance	$ 772.8	$ 630.5
Cost accruals and revenue deferrals	317.8	322.2
Payments and revenue recognized	(236.9)	(228.9)
Currency translation	(20.9)	2.4
Ending balance	$ 832.8	$ 726.2