Discontinued Operations	3 Months Ended
	Mar. 26, 2023
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued OperationsOn February 28, 2018, the Company entered into a Stock Purchase Agreement to sell the operations of Kratos Public Safety & Security Solutions, Inc., a Delaware corporation and wholly owned subsidiary of the Company (“PSS”), to Securitas Electronic Security, Inc., a Delaware corporation (“Buyer”). On June 11, 2018, the Company completed the sale of all of the issued and outstanding capital stock of PSS to Buyer for a purchase price of $69 million in cash, subject to a closing net working capital adjustment (the “Transaction”). To date, the Company has received approximately $68.7 million of aggregate net cash proceeds from the Transaction, after taking into account amounts that were paid by the Company pursuant to a negotiated transaction services agreement between the Company and the Buyer, receipt of approximately $7.3 million in net working capital retained by the Company, and associated transaction fees and expenses, including the impact of the final settlement and determination of the closing net working capital adjustment and litigation which was settled with the Buyer in the fourth quarter of 2021 and first quarter of 2022, respectively.