Operating Segments and Related Disclosures - Summary of Sales to U.S. Government and its Agencies (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Dec. 31, 2015	Mar. 31, 2016	Feb. 28, 2015
Revenue, Major Customer [Line Items]
Net sales	$ 96.3	$ 356.9	$ 323.0
U. S. Government Sales [Member]
Revenue, Major Customer [Line Items]
Net sales	$ 82.0	$ 326.7	$ 300.5
U. S. Government Sales [Member] | Sales Revenue, Net [Member] | Customers [Member]
Revenue, Major Customer [Line Items]
Percentage of net sales	85.00%	92.00%	93.00%