Commitments and Contingencies (Tables)

12 Months Ended

Nov. 30, 2013

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Rental Commitments Under Non-Cancelable Operating Leases

The future minimum rental commitments under non-cancelable operating leases with initial or remaining terms of one year or more and lease revenue in effect as of November 30, 2013 were as follows:

Year Ending November 30,	Future Minimum Rental Commitments		Future Minimum Rental Income
	(In millions)
2014	$	21.4	$	5.7
2015		18.4		4.6
2016		15.5		2.5
2017		11.2		0.2
2018		10.4		—
Thereafter		45.2		—
	$	122.1	$	13.0

Summary of Environmental Reserve Activity

A summary of the Company’s environmental reserve activity is shown below:

	Aerojet Rocketdyne Sacramento			Aerojet Rocketdyne BPOU			Other Aerojet Rocketdyne Sites			Total Aerojet Rocketdyne			Other			Total Environmental Reserve
	(In millions)
November 30, 2010	$	139.8		$	46.1		$	20.1		$	206.0		$	11.7		$	217.7
Additions		21.2			5.9			5.9			33.0			(0.1	)		32.9
Expenditures		(30.3	)		(13.4	)		(13.9	)		(57.6	)		(2.4	)		(60.0	)
November 30, 2011		130.7			38.6			12.1			181.4			9.2			190.6
Additions		24.5			5.9			3.8			34.2			0.5			34.7
Expenditures		(14.7	)		(13.3	)		(5.1	)		(33.1	)		(2.7	)		(35.8	)
November 30, 2012		140.5			31.2			10.8			182.5			7.0			189.5
Additions		9.8			5.1			0.1			15.0			3.8			18.8
Expenditures		(22.3	)		(9.4	)		(2.7	)		(34.4	)		(2.6	)		(37.0	)
November 30, 2013	$	128.0		$	26.9		$	8.2		$	163.1		$	8.2		$	171.3

Summary of Pre-Close Environmental Costs

A summary of the Pre-Close Environmental Costs is shown below (in millions):

Pre-Close Environmental Costs	$	20.0
Amount spent through November 30, 2013		(15.6	)
Amount included as a component of reserves for environmental remediation costs in the consolidated balance sheet as of November 30, 2013		(2.9	)
Remaining Pre-Close Environmental Costs	$	1.5

Summary of Northrop Agreement Activity

A summary of the Northrop Agreement activity is shown below (in millions):

Total reimbursable costs under the Northrop Agreement	$	189.7
Amount reimbursed to the Company through November 30, 2013		(101.2	)
Potential future cost reimbursements available(1)		88.5
Long-term receivable from Northrop in excess of the annual limitation included in the consolidated balance sheet as of November 30, 2013		(72.0	)
Amounts recoverable from Northrop in future periods included as a component of recoverable from the U.S. government and other third parties for environmental remediation costs in the consolidated balance sheet as of November 30, 2013		(16.5	)
Potential future recoverable amounts available under the Northrop Agreement	$	—

(1) Includes the short-term receivable from Northrop of $6.0 million as of November 30, 2013.

Schedule of Environmental Reserves and Recoveries

Summarized financial information for the impact of environmental reserves and recoveries to the consolidated statements of operations is set forth below:

	Year Ended
	2013		2012		2011
	(In millions)
Estimated recoverable amounts under U.S. government contracts	$	10.4	$	23.1	$	24.3
Charge to consolidated statement of operations		8.4		11.6		8.6
Total environmental reserve additions	$	18.8	$	34.7	$	32.9