CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Total revenues	$ 200.6	$ 202.0	$ 599.9	$ 541.3
Total costs	140.0	144.9	436.3	392.4
Gross profit	60.6	57.1	163.6	148.9
Selling, general and administrative expenses	41.8	36.3	117.9	107.2
Merger and acquisition expenses	0.3	0.1	0.6	1.5
Research and development expenses	8.0	7.7	26.2	19.4
Restructuring expenses and other	0.0	0.3	0.2	0.5
Operating income	10.5	12.7	18.7	20.3
Other expense:
Interest expense, net	(5.9)	(5.9)	(17.5)	(16.9)
Other income, net	0.0	0.8	0.2	0.6
Total other expense, net	(5.9)	(5.1)	(17.3)	(16.3)
Income from continuing operations before income taxes	4.6	7.6	1.4	4.0
Provision (benefit) for income taxes from continuing operations	5.7	5.0	(0.6)	1.8
Income (loss) from continuing operations	(1.1)	2.6	2.0	2.2
Loss from discontinued operations before income taxes	(1.0)	(0.2)	(1.4)	(1.0)
Income tax benefit	0.2	0.0	0.3	0.2
Loss from discontinued operations	(0.8)	(0.2)	(1.1)	(0.8)
Net income (loss)	(1.9)	2.4	0.9	1.4
Less: Net income (loss) attributable to noncontrolling interest	0.5	0.0	0.3	(0.1)
Net income (loss) attributable to Kratos	$ (2.4)	$ 2.4	$ 0.6	$ 1.5
Basic income (loss) per common share attributable to Kratos:
Income from continuing operations (in dollars per share)	$ (0.01)	$ 0.02	$ 0.01	$ 0.02
Loss from discontinued operations (in dollars per share)	(0.01)	0	(0.01)	(0.01)
Net income per common share (in dollars per share)	(0.02)	0.02	0	0.01
Diluted income (loss) per common share attributable to Kratos:
Income from continuing operations (in dollars per share)	(0.01)	0.02	0.01	0.02
Loss from discontinued operations (in dollars per share)	(0.01)	0	(0.01)	(0.01)
Net income per common share (in dollars per share)	$ (0.02)	$ 0.02	$ 0	$ 0.01
Weighted average common shares outstanding:
Basic (in shares)	124.9	123.1	124.6	112.9
Diluted (in shares)	124.9	126.4	127.9	115.9
Service revenues
Total revenues	$ 51.6	$ 67.6	$ 166.9	$ 194.1
Total costs	35.5	50.5	119.3	141.9
Product sales
Total revenues	149.0	134.4	433.0	347.2
Total costs	$ 104.5	$ 94.4	$ 317.0	$ 250.5