Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Summary of Environmental Reserve Activity

The following table summarizes the Company’s environmental reserve activity:

	Aerojet Rocketdyne- Sacramento			Aerojet Rocketdyne- BPOU			Other Aerojet Rocketdyne Sites			Total Aerojet Rocketdyne			Other			Total Environmental Reserve
	(In millions)
December 31, 2019	$	203.6		$	89.6		$	11.8		$	305.0		$	4.2		$	309.2
Additions/Adjustments	9.2			(0.9		)	(2.0		)	6.3			0.2			6.5
Expenditures	(8.7		)	(6.8		)	(0.7		)	(16.2		)	(0.2		)	(16.4		)
June 30, 2020	$	204.1		$	81.9		$	9.1		$	295.1		$	4.2		$	299.3

Summary of Northrop Agreement Activity

The following table summarizes the Northrop Agreement activity (in millions):

Total reimbursable costs under the Northrop Agreement	$	189.7
Amount reimbursed to the Company through June 30, 2020	(140.2		)
Receivable from Northrop included in the unaudited balance sheet at June 30, 2020	$	49.5

Summary of Financial Information for the Impact of Environmental Reserves and Recoveries

The following table summarizes the financial information for the impact of environmental reserves and recoveries to the unaudited condensed consolidated statements of operations:

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
	(In millions)
Expense to unaudited condensed consolidated statements of operations	$	0.7	$	0.4	$	0.2	$	0.7