Balance Sheet Accounts and Supplemental Disclosures, (As Restated for fiscal 2014 and 2013) - Schedule of Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended	24 Months Ended
	Nov. 30, 2014	Nov. 30, 2015
Goodwill [Roll Forward]
Ending balance	$ 158.1	$ 158.1
Aerospace and Defense [Member]
Goodwill [Roll Forward]
Beginning balance	152.5	152.5
Ending balance	158.1	158.1
Aerospace and Defense [Member] | Rocketdyne Business [Member]
Goodwill [Roll Forward]
Purchase accounting adjustments in fiscal 2014 related to the Rocketdyne Business acquisition	$ 5.6	$ 5.6