Commitments and Contingencies - Summary of Northrop Agreement Activity (Details) - Northrop - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2017
Contingencies And Commitments [Line Items]
Total reimbursable costs under the Northrop Agreement		$ 189.7
Amount reimbursed to the Company through September 30, 2022	$ (153.7)
Receivable from Northrop included in the unaudited balance sheet at September 30, 2022	$ 36.0