Veloce - Additional Information (Details) (Veloce Technologies Inc., USD $) In Millions, unless otherwise specified	3 Months Ended					12 Months Ended		33 Months Ended
	Mar. 31, 2015	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Jun. 20, 2012
Veloce Technologies Inc.
Variable Interest Entity [Line Items]
Total consideration to be transferred									$ 178.5
Payment of aggregate consideration as cash						9.2	63.7
Aggregate shares issued (shares)						1.1	6.7
Value of aggregate shares issued						5.6	57.3
Research and development expenses incurred	$ 2.1	$ 7.1	$ 2.9	$ 30.4	$ 9.3	$ 9.2	$ 42.7	$ 178.5
Unallocated stock units distributed (shares)						0.6