CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenue	$ 3,938.5	$ 3,630.7	$ 3,283.0
Costs of revenue	2,546.1	2,381.3	2,173.4
Gross profit	1,392.4	1,249.4	1,109.6
General and administrative expenses	368.4	297.1	294.4
Sales and marketing expenses	228.7	205.7	174.0
Research and development expenses	110.8	116.3	102.6
(Gain) loss on sale of businesses	0.0	47.8	(8.1)
Operating income	684.5	678.1	530.5
Interest expense	48.1	36.6	19.2
Interest income	10.7	6.6	8.8
Other non-operating income, net	(4.4)	(1.6)	(1.7)
Income from continuing operations before income tax	651.5	649.7	521.8
Income tax expense	160.1	126.3	105.4
Income from continuing operations	491.4	523.4	416.4
Loss from discontinued operations, net of tax benefit of $0.0, $0.0, and $0.3, respectively	(0.1)	(0.1)	(0.9)
Net income	491.3	523.3	415.5
Less: Income attributable to noncontrolling interests	3.3	3.4	3.3
Net income attributable to ITT Inc.	488.0	519.9	412.2
Amounts attributable to ITT Inc.:
Income from continuing operations, net of tax	488.1	520.0	413.1
Loss from discontinued operations, net of tax	(0.1)	(0.1)	(0.9)
Net income attributable to ITT Inc.	$ 488.0	$ 519.9	$ 412.2
Basic:
Continuing operations	$ 6.15	$ 6.36	$ 5.02
Discontinued operations	0	0	(0.01)
Net income	6.15	6.36	5.01
Diluted:
Continuing operations	6.11	6.32	5.00
Discontinued operations	0	0	(0.02)
Net income	$ 6.11	$ 6.32	$ 4.98
Weighted average common shares – basic	79.4	81.8	82.3
Weighted average common shares – diluted	79.9	82.3	82.7