CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Apr. 04, 2026	Mar. 29, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 79.5	$ 109.1
Other comprehensive (loss) income:
Net foreign currency translation adjustment	(54.1)	27.3
Net change in postretirement benefit plans, net of tax impacts of $0.2 and $0.3 respectively	(0.8)	(1.2)
Other comprehensive (loss) income	(54.9)	26.1
Comprehensive income	24.6	135.2
Less: Comprehensive income attributable to noncontrolling interests	1.5	0.7
Comprehensive income attributable to ITT Inc.	23.1	134.5
Disclosure of reclassification adjustments to postretirement benefit plans:
Amortization of prior service benefit, net of tax expense of $0.2 and $0.3 respectively	(0.7)	(1.1)
Amortization of net actuarial loss, net of tax benefit of $0.0 and $0.0 respectively	(0.1)	(0.1)
Net change in postretirement benefit plans, net of tax	$ 0.8	$ 1.2