Commitments and Contingencies (Tables)

6 Months Ended

May. 31, 2015

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, 2014	$	130.4		$	21.7		$	8.1		$	160.2		$	5.8		$	166.0
Additions	11.8			(0.7		)	0.3			11.4			0.2			11.6
Expenditures	(9.0		)	(5.5		)	(1.1		)	(15.6		)	(0.5		)	(16.1		)
May 31, 2015	$	133.2		$	15.5		$	7.3		$	156.0		$	5.5		$	161.5

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 May 31, 2015	(17.9		)
Amount included as a component of reserves for environmental remediation costs in the unaudited condensed consolidated balance sheet as of May 31, 2015	(2.1		)
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 May 31, 2015	(110.2		)
Potential future cost reimbursements available	79.5
Less: Long-term receivable from Northrop included in the unaudited condensed consolidated balance sheet as of May 31, 2015	(69.7		)
Less: Short-term receivable from Northrop included in the unaudited condensed consolidated balance sheet as of May 31, 2015	(6.0		)
Less: Amounts recoverable from Northrop included in recoverable from the U.S. government and other third parties for environmental remediation costs in the unaudited condensed consolidated balance sheet as of May 31, 2015	(3.8		)
Potential future recoverable amounts available under the Northrop Agreement	$	—

Summary of Financial Information for the Impact 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:

	Three months ended May 31,				Six months ended May 31,
	2015		2014		2015		2014
	(In millions)
Estimated recoverable amounts under U.S. government contracts	$	4.5	$	2.6	$	7.9	$	7.7
Expense to unaudited condensed consolidated statement of operations	2.1		0.5		3.7		2.6
Total environmental reserve adjustments	$	6.6	$	3.1	$	11.6	$	10.3