Balance Sheet Accounts - Schedule of Inventories (Details) - USD ($) $ in Millions	May. 31, 2015	Nov. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Long-term contracts at average cost	$ 527.1	$ 434.6
Progress payments	(378.0)	(296.9)
Total long-term contract inventories	149.1	137.7
Total other inventories	1.2	1.3
Inventories	$ 150.3	$ 139.0