Commitments and Contingencies (Tables)

9 Months Ended

Aug. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

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, 2013	$	128.0		$	26.9		$	8.2		$	163.1		$	8.2		$	171.3
Additions	17.6			3.7			2.6			23.9			1.6			25.5
Expenditures	(15.4		)	(6.8		)	(2.8		)	(25.0		)	(3.2		)	(28.2		)
August 31, 2014	$	130.2		$	23.8		$	8.0		$	162.0		$	6.6		$	168.6

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 August 31, 2014	(16.9		)
Amount included as a component of reserves for environmental remediation costs in the unaudited condensed consolidated balance sheet as of August 31, 2014	(3.1		)
Remaining Pre-Close Environmental Costs	$	—

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 August 31, 2014	(105.7		)
Potential future cost reimbursements available (1)	84.0
Long-term receivable from Northrop in excess of the annual limitation included in the unaudited condensed consolidated balance sheet as of August 31, 2014	(74.0		)
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 unaudited condensed consolidated balance sheet as of August 31, 2014	(10.0		)
Potential future recoverable amounts available under the Northrop Agreement	$	—

Summary of Environmental Reserves and Recoveries

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

	Estimated Recoverable Amounts Under U.S. Government Contracts		Expense to Unaudited Condensed Consolidated Statement of Operations		Total Environmental Reserve Adjustments
	(In millions)
Three months ended August 31, 2014	$	9.8	$	5.4	$	15.2
Three months ended August 31, 2013	3.7		1.9		5.6
Nine months ended August 31, 2014	17.5		8.0		25.5
Nine months ended August 31, 2013	5.3		5.4		10.7