Operating Segments and Related Disclosures, (As Restated for fiscal 2014 and 2013) - Selected Financial Information for Each Reportable Segment, Components of Assets (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
Segment Reporting Information [Line Items]
Assets		$ 2,034.9	$ 1,957.6	$ 1,899.3	$ 1,895.7	$ 1,918.6	$ 1,742.3	$ 1,673.2	$ 1,717.8
Operating Segments [Member]
Segment Reporting Information [Line Items]
Identifiable assets		1,704.6				1,552.6
Assets		2,034.9				1,918.6
Operating Segments [Member] | Aerospace and Defense [Member]
Segment Reporting Information [Line Items]
Identifiable assets	[1]	1,580.2				1,432.1
Operating Segments [Member] | Real Estate [Member]
Segment Reporting Information [Line Items]
Identifiable assets		124.4				120.5
Operating Segments [Member] | Corporate Segment [Member]
Segment Reporting Information [Line Items]
Assets		$ 330.3				$ 366.0

[1] The Aerospace and Defense operating segment had $158.1 million of goodwill as of November 30, 2015 and 2014. In addition, as of November 30, 2015 and 2014 intangible assets balances (other than goodwill) were $108.8 million and $122.2 million, respectively, in the Aerospace and Defense operating segment.