CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Total revenues	$ 187.9	$ 151.2	$ 348.3	$ 294.2
Total costs	139.8	111.9	255.3	214.1
Gross profit	48.1	39.3	93.0	80.1
Selling, general and administrative expenses	33.7	30.1	65.2	59.9
Merger and acquisition expenses	0.6	0.0	1.8	0.0
Research and development expenses	4.5	3.6	8.4	7.2
Restructuring expenses and other	0.3	3.0	0.4	3.4
Operating income from continuing operations	9.0	2.6	17.2	9.6
Other income (expense):
Interest expense, net	(5.3)	(5.7)	(10.8)	(10.8)
Other income (expense), net	0.1	(0.6)	(0.4)	(0.3)
Total other expense, net	(5.2)	(6.3)	(11.2)	(11.1)
Income (loss) from continuing operations before income taxes	3.8	(3.7)	6.0	(1.5)
Provision for income taxes from continuing operations	2.5	0.1	1.0	1.0
Income (loss) from continuing operations	1.3	(3.8)	5.0	(2.5)
Discontinued operations
Income (loss) from operations of discontinued component	2.9	(5.7)	2.4	(9.6)
Income tax benefit	0.1	1.8	0.0	2.2
Income (loss) from discontinued operations	3.0	(3.9)	2.4	(7.4)
Net income (loss)	4.3	(7.7)	7.4	(9.9)
Less: Net income attributable to noncontrolling interest	0.4	0.0	0.4	0.0
Net income (loss) attributable to Kratos	$ 3.9	$ (7.7)	$ 7.0	$ (9.9)
Basic income (loss) per common share attributable to Kratos:
Net loss from continuing operations (in dollars per share)	$ 0.01	$ (0.04)	$ 0.04	$ (0.02)
Net loss from discontinued operations (in dollars per share)	0.03	(0.03)	0.02	(0.08)
Net loss per common share (in dollars per share)	0.04	(0.07)	0.06	(0.10)
Diluted income (loss) per common share attributable to Kratos:
Net loss from continuing operations (in dollars per share)	0.01	(0.04)	0.04	(0.02)
Net loss from discontinued operations (in dollars per share)	0.03	(0.03)	0.02	(0.08)
Net loss per common share (in dollars per share)	$ 0.04	$ (0.07)	$ 0.06	$ (0.10)
Weighted average common shares outstanding:
Basic (in shares)	106.1	103.7	105.5	103.7
Diluted (in shares)	109.4	103.7	108.6	103.7
Comprehensive Income (Loss)
Net (loss)	$ 4.3	$ (7.7)	$ 7.4	$ (9.9)
Change in cumulative translation adjustment	(0.1)	0.1	(0.1)	0.0
Comprehensive income (loss)	4.2	(7.6)	7.3	(9.9)
Less: Comprehensive income attributable to noncontrolling interest	0.4	0.0	0.4	0.0
Comprehensive income (loss) attributable to Kratos	3.8	(7.6)	6.9	(9.9)
Service revenues
Total revenues	73.7	47.0	136.3	93.0
Total costs	50.6	33.2	92.6	66.1
Product sales
Total revenues	114.2	104.2	212.0	201.2
Total costs	$ 89.2	$ 78.7	$ 162.7	$ 148.0