CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 796.1	$ 686.0	$ 1,547.2	$ 1,338.0
Cost of sales	439.2	379.9	847.8	739.3
Gross profit	356.9	306.1	699.4	598.7
Selling, general and administrative expenses	167.5	144.6	321.8	279.5
Restructuring expenses and asset impairments	2.8	3.2	3.4	5.4
Operating income	186.6	158.3	374.2	313.8
Other expense (income) - net	0.0	17.2	(2.3)	16.4
Interest expense	9.5	11.2	19.0	21.9
Income before income taxes	177.1	129.9	357.5	275.5
Provision for income taxes	39.0	27.7	79.5	60.6
Net income	138.1	102.2	278.0	214.9
Net loss attributable to noncontrolling interest	0.1	0.0	0.2	0.0
Net income attributable to IDEX	$ 138.2	$ 102.2	$ 278.2	$ 214.9
Earnings per common share:
Basic earnings per common share attributable to IDEX (in dollars per share)	$ 1.82	$ 1.34	$ 3.66	$ 2.83
Diluted earnings per common share attributable to IDEX (in dollars per share)	$ 1.81	$ 1.34	$ 3.65	$ 2.81
Share data:
Basic weighted average common shares outstanding (in shares)	75.8	76.0	76.0	75.9
Diluted weighted average common shares outstanding (in shares)	76.1	76.4	76.2	76.4