Basis of Presentation and Nature of Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				0 Months Ended	1 Months Ended	3 Months Ended
	Feb. 28, 2014 Segment acre	Feb. 28, 2013	Feb. 28, 2014 Net Sales [Member] Contracts [Member]	Feb. 28, 2013 Net Sales [Member] Contracts [Member]	Jun. 14, 2013 Rocketdyne Business [Member] M	Jul. 31, 2012 Rocketdyne Business [Member]	Feb. 28, 2014 Rocketdyne Business [Member]
Business Acquisition [Line Items]
Number of operating segments	2
Acres of land owned by the Company	11,900
Acquisition, purchase price						$ 550
Aggregate consideration, paid in cash					411.2
Number of days required to provide notice period prior to termination date							5 days
Business acquisition date, Rocketdyne Business							Jun. 14, 2013
Decrease in initial purchase price					55.0		55.0
Expected future acquisition of ownership interest percentage					50.00%		50.00%
Agreement termination date							Jun. 12, 2015
Number of additional periods for termination extension date					12
Final termination date extended period							Jun. 12, 2016
Additional net sales		$ 27.8
Percentage of net sales, on contracts			85.00%	85.00%