Other Assets, Net - Schedule of Other Assets, Net of Accumulated Amortization (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Other Assets, Noncurrent [Abstract]
Deferred financing costs, net	$ 6.0	$ 7.1
Deferred income taxes	17.8	17.8
Advances to and investments in joint ventures, net	53.5	33.4
Other	4.4	6.8
Total other assets, net	$ 81.7	$ 65.1