Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2023

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, 2022	$	223.6	$	50.8	$	10.8	$	285.2	$	5.3	$	290.5
Additions/Adjustments	4.5		(1.7)		0.2		3.0		0.1		3.1
Expenditures	(4.0)		(3.9)		(0.3)		(8.2)		(0.1)		(8.3)
March 31, 2023	$	224.1	$	45.2	$	10.7	$	280.0	$	5.3	$	285.3

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 March 31, 2023	(156.7)
Receivable from Northrop included in the unaudited balance sheet at March 31, 2023	$	33.0

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 March 31,
	2023		2022
	(In millions)
Expense to unaudited condensed consolidated statements of operations	$	0.5	$	0.4