CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 846.2	$ 796.1	$ 1,691.6	$ 1,547.2
Cost of sales	468.2	439.2	931.1	847.8
Gross profit	378.0	356.9	760.5	699.4
Selling, general and administrative expenses	174.3	167.5	364.0	321.8
Restructuring expenses and asset impairments	3.6	2.8	4.1	3.4
Operating income	200.1	186.6	392.4	374.2
Other expense (income) - net	8.3	0.0	7.7	(2.3)
Interest expense	13.3	9.5	26.4	19.0
Income before income taxes	178.5	177.1	358.3	357.5
Provision for income taxes	40.0	39.0	80.0	79.5
Net income	138.5	138.1	278.3	278.0
Net loss attributable to noncontrolling interest	0.1	0.1	0.1	0.2
Net income attributable to IDEX	$ 138.6	$ 138.2	$ 278.4	$ 278.2
Earnings per common share:
Basic earnings per common share attributable to IDEX (in dollars per share)	$ 1.83	$ 1.82	$ 3.68	$ 3.66
Diluted earnings per common share attributable to IDEX (in dollars per share)	$ 1.82	$ 1.81	$ 3.66	$ 3.65
Share data:
Basic weighted average common shares outstanding (in shares)	75.6	75.8	75.6	76.0
Diluted weighted average common shares outstanding (in shares)	75.9	76.1	75.9	76.2