Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions			12 Months Ended
	May. 05, 2016	May. 05, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Commitments [Line Items]
Rent expense			$ 11.1	$ 10.2	$ 5.5
Outstanding commitments			375.0
Commitment, funded			234.8
Commitments, unfunded			140.2
Total parental guarantees			$ 334.2	$ 238.6
Wilton Relife Settlements
Other Commitments [Line Items]
Aggregate cash purchase price		$ 83.9
Scenario, Forecast | Wilton Relife Settlements
Other Commitments [Line Items]
Aggregate cash purchase price	$ 83.9