CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenue	$ 2,405.4	$ 2,485.6	$ 2,654.6
Costs of revenue	1,647.2	1,676.5	1,788.2
Gross profit	758.2	809.1	866.4
General and administrative expenses	274.1	258.3	300.1
Sales and marketing expenses	170.0	183.2	219.4
Research and development expenses	80.8	78.9	76.6
Asbestos-related (benefit) costs, net	(25.6)	(91.4)	3.9
Operating income	258.9	380.1	266.4
Interest and non-operating expenses (income), net	0.5	(2.2)	4.4
Income from continuing operations before income tax	258.4	382.3	262.0
Income tax expense	76.0	70.1	71.3
Income from continuing operations	182.4	312.2	190.7
Income (loss) from discontinued operations, including tax (expense) benefit of $(0.3), $24.5, and $4.8, respectively	4.2	39.4	(3.9)
Net income	186.6	351.6	186.8
Less: Income (loss) attributable to noncontrolling interests	0.5	(0.2)	2.3
Net income attributable to ITT Inc.	186.1	351.8	184.5
Amounts attributable to ITT Inc.:
Income from continuing operations, net of tax	181.9	312.4	188.4
Income (loss) from discontinued operations, including tax (expense) benefit of $(0.3), $24.5, and $4.8, respectively	4.2	39.4	(3.9)
Net income attributable to ITT Inc.	$ 186.1	$ 351.8	$ 184.5
Basic earnings per share:
Continuing operations	$ 2.04	$ 3.48	$ 2.06
Discontinued operations	0.05	0.44	(0.04)
Net income	2.09	3.92	2.02
Diluted earnings per share:
Continuing operations	2.02	3.44	2.03
Discontinued operations	0.05	0.44	(0.04)
Net income	$ 2.07	$ 3.88	$ 1.99
Weighted average common shares – basic	89.2	89.8	91.5
Weighted average common shares – diluted	89.9	90.7	92.8
Cash dividends declared per common share	$ 0.496	$ 0.4732	$ 0.44