Operating Segments and Related Disclosures, (As Restated for fiscal 2014 and 2013) - Selected Financial Information for Each Reportable Segment, Components of Assets (Footnote) (Details) - USD ($) $ in Millions	Nov. 30, 2015	Aug. 31, 2015	May. 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May. 31, 2014	Feb. 28, 2014	Nov. 30, 2013
Segment Reporting Information [Line Items]
Goodwill	$ 158.1	$ 158.1	$ 158.1	$ 158.1	$ 158.1	$ 158.1	$ 158.1	$ 153.1
Intangible assets	108.8	$ 112.1	$ 115.5	$ 118.8	122.2	$ 125.6	$ 128.9	$ 132.3
Aerospace and Defense [Member]
Segment Reporting Information [Line Items]
Goodwill	158.1				158.1				$ 152.5
Intangible assets	$ 108.8				$ 122.2