CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenue	$ 3,283.0	$ 2,987.7	$ 2,765.0
Costs of revenue	2,175.7	2,065.4	1,865.5
Gross profit	1,107.3	922.3	899.5
General and administrative expenses	302.6	217.2	230.9
Sales and marketing expenses	174.0	156.9	150.8
Research and development expenses	102.6	96.5	94.9
Gain on sale of long-lived assets	(0.1)	(16.3)	(7.0)
Asbestos-related benefit, net	0.0	0.0	(74.4)	[1]
Restructuring costs	9.9	3.8	9.6
Operating income	528.2	468.0	504.3
Interest expense (income), net	10.4	6.4	(1.1)
Other non-operating income, net	(1.7)	(0.2)	(3.7)
Income from continuing operations before income tax	519.5	461.8	509.1
Income tax expense	104.8	91.1	189.6
Income from continuing operations	414.7	370.7	319.5
(Loss) income from discontinued operations, net of tax benefit of $0.3, $0.4, and $0.2, respectively	(0.9)	(1.3)	1.5
Net income	413.8	369.4	321.0
Less: Income attributable to noncontrolling interests	3.3	2.4	4.7
Net income attributable to ITT Inc.	410.5	367.0	316.3
Amounts attributable to ITT Inc.:
Income from continuing operations, net of tax	411.4	368.3	314.8
(Loss) income from discontinued operations, net of tax	(0.9)	(1.3)	1.5
Net income attributable to ITT Inc.	$ 410.5	$ 367.0	$ 316.3
Basic:
Continuing operations	$ 5.00	$ 4.42	$ 3.66
Discontinued operations	(0.01)	(0.02)	0.02
Net income	4.99	4.40	3.68
Diluted:
Continuing operations	4.97	4.40	3.64
Discontinued operations	(0.01)	(0.02)	0.02
Net income	$ 4.96	$ 4.38	$ 3.66
Weighted average common shares – basic	82.3	83.4	86.0
Weighted average common shares – diluted	82.7	83.7	86.5

[1] The 2021 period includes a pre-tax gain of $88.8 resulting from the InTelCo divestiture transaction. See Note 19, Commitments and Contingencies, for further information.