Acquisition, (As Restated for fiscal 2013) - Schedule of Expenses in Connection with Acquisition (Details) - Rocketdyne Business [Member] $ in Millions	Nov. 30, 2013 USD ($)
Business Acquisition [Line Items]
Expenses incurred in acquisition	$ 31.6
Legal Expenses [Member]
Business Acquisition [Line Items]
Expenses incurred in acquisition	16.4
Professional Fees And Consulting [Member]
Business Acquisition [Line Items]
Expenses incurred in acquisition	8.9
Internal Labor [Member]
Business Acquisition [Line Items]
Expenses incurred in acquisition	3.4
Other Expenses [Member]
Business Acquisition [Line Items]
Expenses incurred in acquisition	1.2
Liquid Divert and Attitude Control Systems [Member]
Business Acquisition [Line Items]
Expenses incurred in acquisition	1.7
Liquid Divert and Attitude Control Systems [Member] | Internal Labor [Member]
Business Acquisition [Line Items]
Expenses incurred in acquisition	$ 0.3