CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Net sales	$ 865.4	$ 807.2	$ 1,679.7	$ 1,607.7
Cost of sales	473.2	440.4	918.6	883.5
Gross profit	392.2	366.8	761.1	724.2
Selling, general and administrative expenses	203.6	182.8	413.0	377.9
Restructuring expenses and asset impairments	0.7	1.3	18.2	2.4
Operating income	187.9	182.7	329.9	343.9
Gain on sale of business	0.0	(4.6)	0.0	(4.6)
Other expense (income) – net	2.4	0.0	3.8	(2.7)
Interest expense – net	15.6	8.1	31.7	17.5
Income before income taxes	169.9	179.2	294.4	333.7
Provision for income taxes	38.8	38.0	67.9	71.2
Net income	131.1	141.2	226.5	262.5
Net loss attributable to noncontrolling interest	0.5	0.1	0.6	0.2
Net income attributable to IDEX	$ 131.6	$ 141.3	$ 227.1	$ 262.7
Earnings per common share:
Basic earnings per common share attributable to IDEX (in dollars per share)	$ 1.74	$ 1.86	$ 3.00	$ 3.46
Diluted earnings per common share attributable to IDEX (in dollars per share)	$ 1.74	$ 1.86	$ 3.00	$ 3.46
Share data:
Basic weighted average common shares outstanding (in shares)	75.5	75.7	75.6	75.7
Diluted weighted average common shares outstanding (in shares)	75.5	75.9	75.7	75.9