Basis of Presentation and Nature of Operations - Summary of Impact from the Aerospace and Defense Segment Net Sales (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Change in Accounting Estimate [Line Items]
Favorable effect of the changes in contract estimates on net income	$ 5.9	$ 5.1
Favorable effect of the changes in contract estimates on basic net income per share (in USD per share)	$ 0.08	$ 0.08
Contracts Accounted for under Percentage-of-Completion
Change in Accounting Estimate [Line Items]
Favorable effect of the changes in contract estimates on income before income taxes	$ 3.4	$ 0.0
Favorable effect of the changes in contract estimates on net income	$ 2.0	$ 0.0
Favorable effect of the changes in contract estimates on basic net income per share (in USD per share)	$ 0.03	$ 0.00