CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 751.1	$ 652.0
Cost of sales	408.6	359.4
Gross profit	342.5	292.6
Selling, general and administrative expenses	154.3	134.9
Restructuring expenses and asset impairments	0.6	2.2
Operating income	187.6	155.5
Other income - net	(2.3)	(0.8)
Interest expense	9.5	10.7
Income before income taxes	180.4	145.6
Provision for income taxes	40.5	32.9
Net income	139.9	112.7
Net loss attributable to noncontrolling interest	0.1	0.0
Net income attributable to IDEX	$ 140.0	$ 112.7
Earnings per common share:
Basic earnings per common share attributable to IDEX (in dollars per share)	$ 1.84	$ 1.48
Diluted earnings per common share attributable to IDEX (in dollars per share)	$ 1.83	$ 1.48
Share data:
Basic weighted average common shares outstanding (in shares)	76.1	75.9
Diluted weighted average common shares outstanding (in shares)	76.4	76.3