Significant Accounting Policies - Summary of Expenses in Special Items (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Significant Accounting Policies Summary Of Expenses In Special Items [Abstract]
Impairment/loss on disposal of assets	$ 3.9	$ 0.3	$ 4.2	$ 0.7
Consulting and professional fees	16.7	25.6	67.0	63.1
Employee severance and retention	3.6	1.8	9.8	6.2
Dedicated project personnel	8.3	3.9	24.8	10.5
Certain R&D agreements			0.8
Relocated facilities	0.8		3.4
Distributor acquisitions			0.3	0.4
Certain litigation matters	9.0	3.3	26.9	13.2
Contract terminations	0.6	2.0	2.0	4.6
Contingent consideration adjustments	0.1	(2.0)	6.0	(2.8)
Accelerated software amortization	1.5	1.5	4.5	3.0
Other	1.9	0.5	5.8	2.2
Special items	$ 46.4	$ 36.9	$ 155.5	$ 101.1