CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2026	Sep. 27, 2025	Oct. 03, 2026	Sep. 27, 2025
Income Statement [Abstract]
Revenue	$ 1,440.6	$ 999.1	$ 4,125.6	$ 2,884.5
Cost of revenue	890.2	640.4	2,636.3	1,851.9
Gross profit	550.4	358.7	1,489.3	1,032.6
General and administrative expenses	139.0	89.6	436.9	260.2
Sales and marketing expenses	88.4	51.8	249.5	150.9
Research and development expenses	35.0	26.4	104.0	79.0
Intangible amortization expenses	61.2	11.1	150.5	36.7
Operating income	226.8	179.8	548.4	505.8
Interest expense	45.0	11.7	119.4	33.6
Interest income	(3.3)	(1.5)	(17.5)	(5.6)
Other non-operating income, net	(1.2)	(2.9)	(3.8)	(3.2)
Income before income tax expense	186.3	172.5	450.3	481.0
Income tax expense	61.8	44.3	159.9	122.0
Income from continuing operations	124.5	128.2	290.4	359.0
Loss from discontinued operations, net of tax	0.0	(0.1)	0.0	(0.1)
Net income	124.5	128.1	290.4	358.9
Less: Income attributable to noncontrolling interests	0.9	1.2	4.0	2.6
Net income attributable to ITT Inc.	123.6	126.9	286.4	356.3
Net Income (Loss) Attributable to Parent [Abstract]
Income from continuing operations	123.6	127.0	286.4	356.4
Loss from discontinued operations, net of tax	0.0	(0.1)	0.0	(0.1)
Net income attributable to ITT Inc.	$ 123.6	$ 126.9	$ 286.4	$ 356.3
Earnings per share attributable to ITT Inc.:
Basic	$ 1.38	$ 1.63	$ 3.23	$ 4.49
Diluted	$ 1.38	$ 1.62	$ 3.21	$ 4.46
Weighted average common shares – basic	89.4	78.0	88.7	79.4
Weighted average common shares – diluted	89.8	78.4	89.1	79.8