Commitments and Contingencies - Narrative - Environmental Reserves and Estimated Recoveries (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Jun. 30, 2017
Site Contingency [Line Items]
Environmental remediation cost expected period (years)	15 years
Reimbursable remediation cost	$ 189.7
Non-reimbursable percentage of environmental costs	12.00%
Northrop
Site Contingency [Line Items]
Percentage of environmental remediation costs recoverable	88.00%
Current annual billing limitation	$ 6.0
Reimbursable remediation cost		$ 189.7