Acquisitions (DSS Acquisition) - Business Combination Transfer Consideration (Detail) - DSS Group Inc [Member] - USD ($) $ in Millions		1 Months Ended
	Dec. 12, 2014	Dec. 12, 2014
Business Acquisition [Line Items]
Cash paid to sellers		$ 449.7
Working capital adjustment		11.4
Cash paid on behalf of sellers for sellers expenses		25.3
Cash paid to retire term loan on behalf of sellers		317.3
Total cash and stock consideration	$ 1,246.0	952.5
Convertible Preferred Shares [Member]
Business Acquisition [Line Items]
Preferred Shares	116.1	116.1
Non-convertible Preferred Shares [Member]
Business Acquisition [Line Items]
Preferred Shares	$ 32.7	$ 32.7