CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Income Statement [Abstract]
Revenue	$ 905.9	$ 833.9	$ 1,816.5	$ 1,631.8
Cost of revenue	589.8	553.9	1,199.6	1,089.9
Gross profit	316.1	280.0	616.9	541.9
General and administrative expenses	76.8	68.4	148.3	136.7
Sales and marketing expenses	50.6	43.9	100.7	86.8
Research and development expenses	29.7	25.7	59.7	52.1
Operating income	159.0	142.0	308.2	266.3
Interest Expense	7.4	4.5	15.1	11.2
Interest Income, Operating	(1.6)	(2.0)	(3.4)	(4.6)
Other Nonoperating Income (Expense)	(0.2)	0.0	(1.7)	(0.6)
Income before income tax expense	153.4	139.5	298.2	260.3
Income tax expense	33.0	30.6	65.8	50.7
Net income	120.4	108.9	232.4	209.6
Less: Income attributable to noncontrolling interests	1.2	0.7	2.2	1.4
Net income attributable to ITT Inc.	$ 119.2	$ 108.2	$ 230.2	$ 208.2
Earnings per share attributable to ITT Inc.:
Basic	$ 1.45	$ 1.31	$ 2.80	$ 2.52
Diluted	$ 1.45	$ 1.31	$ 2.79	$ 2.51
Weighted average common shares – basic	82.0	82.4	82.1	82.5
Weighted average common shares – diluted	82.4	82.6	82.5	82.8