CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Dec. 25, 2022
Total revenues	$ 1,136.3	$ 1,037.1	$ 898.3
Total costs	849.1	768.5	672.3
Gross profit	287.2	268.6	226.0
Selling, general and administrative expenses	214.0	197.8	182.8
Merger and acquisition related items	0.7	0.4	0.7
Research and development expenses	40.3	38.4	38.6
Restructuring expenses and other	3.2	0.9	6.8
Operating income (loss)	29.0	31.1	(2.9)
Other expense:
Interest expense, net	(3.0)	(20.5)	(17.7)
Loss on extinguishment of debt	0.0	0.0	(13.0)
Other income, net	0.5	0.5	0.6
Total other expense, net	(2.5)	(20.0)	(30.1)
Income (loss) before income taxes	26.5	11.1	(33.0)
Provision for income taxes	10.2	8.7	0.2
Net income (loss) from consolidated operations	16.3	2.4	(33.2)
Less: Net income attributable to noncontrolling interest	0.0	11.3	3.7
Net income (loss) attributable to Kratos	$ 16.3	$ (8.9)	$ (36.9)
Basic income (loss) per common share attributable to Kratos (in dollars per share)	$ 0.11	$ (0.07)	$ (0.29)
Diluted income (loss) per common share attributable to Kratos (in dollars per share)	$ 0.11	$ (0.07)	$ (0.29)
Weighted average common shares outstanding:
Basic (in shares)	149.0	130.4	126.7
Diluted (in shares)	150.9	130.4	126.7
Service revenues
Total revenues	$ 423.4	$ 402.6	$ 325.2
Total costs	310.0	303.2	239.0
Product sales
Total revenues	712.9	634.5	573.1
Total costs	$ 539.1	$ 465.3	$ 433.3