CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Income Statement [Abstract]
Revenue	$ 833.9	$ 733.3	$ 1,631.8	$ 1,459.5
Cost of revenue	553.9	511.1	1,089.9	1,018.9
Gross profit	280.0	222.2	541.9	440.6
General and administrative expenses	68.4	57.0	136.7	117.4
Sales and marketing expenses	43.9	40.4	86.8	78.8
Research and development expenses	25.7	24.3	52.1	49.3
Operating income	142.0	100.5	266.3	195.1
Interest and non-operating expense, net	2.5	0.5	6.0	0.3
Income from continuing operations before income tax expense	139.5	100.0	260.3	194.8
Income tax expense	30.6	24.0	50.7	43.5
Income from continuing operations	108.9	76.0	209.6	151.3
Loss from discontinued operations, net of tax benefit of $0.0, $0.4, $0.0, and $0.4, respectively	0.0	(1.2)	0.0	(1.2)
Net income	108.9	74.8	209.6	150.1
Less: Income attributable to noncontrolling interests	0.7	0.2	1.4	0.7
Net income attributable to ITT Inc.	108.2	74.6	208.2	149.4
Amounts attributable to ITT Inc.:
Income from continuing operations	108.2	75.8	208.2	150.6
Loss from discontinued operations, net of tax	0.0	(1.2)	0.0	(1.2)
Net income attributable to ITT Inc.	$ 108.2	$ 74.6	$ 208.2	$ 149.4
Basic:
Continuing operations	$ 1.31	$ 0.91	$ 2.52	$ 1.79
Discontinued operations	0	(0.01)	0	(0.01)
Earnings Per Share, Basic, Total	1.31	0.90	2.52	1.78
Diluted:
Continuing operations	1.31	0.91	2.51	1.79
Discontinued operations	0	(0.02)	0	(0.02)
Earnings Per Share, Diluted, Total	$ 1.31	$ 0.89	$ 2.51	$ 1.77
Weighted average common shares – basic	82.4	83.1	82.5	84.0
Weighted average common shares – diluted	82.6	83.4	82.8	84.3