Commitments and Contingencies - Summary of Northrop Agreement Activity (Details) - USD ($) $ in Millions	Mar. 31, 2023	Jun. 30, 2017
Contingencies And Commitments [Line Items]
Total reimbursable costs under the Northrop Agreement	$ 189.7
Northrop
Contingencies And Commitments [Line Items]
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