CONSOLIDATED CONDENSED INCOME STATEMENTS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenue	$ 630.9	$ 626.2	$ 1,256.7	$ 1,235.3
Costs of revenue	426.5	420.6	850.0	834.4
Gross profit	204.4	205.6	406.7	400.9
General and administrative expenses	65.3	74.0	131.5	143.0
Sales and marketing expenses	43.9	46.0	87.0	89.3
Research and development expenses	22.6	21.1	45.1	40.3
Asbestos-related costs, net	14.9	15.0	29.8	27.8
Operating income	57.7	49.5	113.3	100.5
Interest and non-operating (income) expenses, net	(0.9)	(0.5)	(0.1)	1.2
Income from continuing operations before income tax expense	58.6	50.0	113.4	99.3
Income tax expense	10.6	17.5	19.7	29.2
Income from continuing operations	48.0	32.5	93.7	70.1
(Loss) income from discontinued operations, net of tax	(0.1)	0.5	(0.2)	0.2
Net income	47.9	33.0	93.5	70.3
Less: Income (loss) attributable to noncontrolling interests	0.1	0.2	(0.3)	0.1
Net income attributable to ITT Inc.	47.8	32.8	93.8	70.2
Amounts attributable to ITT Inc.:
Income from continuing operations, net of tax	47.9	32.3	94.0	70.0
(Loss) income from discontinued operations, net of tax	(0.1)	0.5	(0.2)	0.2
Net income attributable to ITT Inc.	$ 47.8	$ 32.8	$ 93.8	$ 70.2
Basic:
Continuing operations	$ 0.54	$ 0.36	$ 1.06	$ 0.78
Discontinued operations	0.00	0.00	0.00	0.00
Net income	0.54	0.36	1.06	0.78
Diluted:
Continuing operations	0.54	0.36	1.05	0.78
Discontinued operations	0.00	0.00	0.00	0.00
Net income	$ 0.54	$ 0.36	$ 1.05	$ 0.78
Weighted average common shares – basic	88.5	89.8	88.4	89.7
Weighted average common shares – diluted	89.0	90.4	89.1	90.4
Cash dividends declared per common share	$ 0.128	$ 0.124	$ 0.256	$ 0.248