CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 25, 2022	Dec. 26, 2021
Total revenues	$ 1,037.1	$ 898.3	$ 811.5
Total costs	768.5	672.3	586.4
Gross profit	268.6	226.0	225.1
Selling, general and administrative expenses	197.8	182.5	160.2
Merger and acquisition related items	0.4	0.7	1.8
Research and development expenses	38.4	38.6	35.2
Restructuring expenses and other	0.9	6.8	0.0
Operating income (loss)	31.1	(2.6)	27.9
Other expense:
Interest expense, net	(20.5)	(17.7)	(23.4)
Loss on extinguishment of debt	0.0	(13.0)	0.0
Other income (expense), net	0.5	0.6	(0.1)
Total other expense, net	(20.0)	(30.1)	(23.5)
Income (loss) from continuing operations before income taxes	11.1	(32.7)	4.4
Provision for income taxes from continuing operations	8.9	1.4	3.9
Income (loss) from continuing operations	2.2	(34.1)	0.5
Loss from operations of discontinued component	0.0	(0.3)	(2.3)
Income tax benefit	(0.2)	(1.2)	(0.2)
Income (loss) from discontinued operations	0.2	0.9	(2.1)
Net income (loss)	2.4	(33.2)	(1.6)
Less: Net income attributable to noncontrolling interest	11.3	3.7	0.4
Net loss attributable to Kratos	$ (8.9)	$ (36.9)	$ (2.0)
Basic income (loss) per common share attributable to Kratos:
Income (loss) from continuing operations (in dollars per share)	$ (0.07)	$ (0.30)	$ 0.00
Income (loss) from discontinued operations (in dollars per share)	0.00	0.01	(0.02)
Net loss per common share (in dollars per share)	(0.07)	(0.29)	(0.02)
Diluted income (loss) per common share attributable to Kratos:
Income (loss) from continuing operations (in dollars per share)	(0.07)	(0.30)	0.00
Income (loss) from discontinued operations (in dollars per share)	0.00	0.01	(0.02)
Net loss per common share (in dollars per share)	$ (0.07)	$ (0.29)	$ (0.02)
Weighted average common shares outstanding:
Basic (in shares)	130.4	126.7	124.6
Diluted (in shares)	130.4	126.7	128.0
Service revenues
Total revenues	$ 402.6	$ 325.2	$ 219.4
Total costs	303.2	239.0	156.2
Product sales
Total revenues	634.5	573.1	592.1
Total costs	$ 465.3	$ 433.3	$ 430.2