CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 3,181.9	$ 2,764.8	$ 2,351.6
Cost of sales	1,755.0	1,540.3	1,324.2
Gross profit	1,426.9	1,224.5	1,027.4
Selling, general and administrative expenses	652.7	578.2	494.9
Restructuring expenses and asset impairments	22.8	9.3	11.8
Operating income	751.4	637.0	520.7
Gain on sale of business	(34.8)	0.0	0.0
Other (income) expense - net	(3.9)	16.2	5.6
Interest expense	40.7	41.0	44.8
Income before income taxes	749.4	579.8	470.3
Provision for income taxes	162.7	130.5	92.5
Net income	586.7	449.3	377.8
Net loss attributable to noncontrolling interest	0.2	0.1	0.0
Net income	$ 586.9	$ 449.4	$ 377.8
Earnings per common share:
Basic earnings per common share attributable to IDEX (in dollar per share)	$ 7.74	$ 5.91	$ 4.98
Diluted earnings per common share attributable to IDEX (in dollar per share)	$ 7.71	$ 5.88	$ 4.94
Share data:
Basic weighted average common shares outstanding (in shares)	75.7	76.0	75.7
Diluted weighted average common shares outstanding (in shares)	76.0	76.4	76.4