ACQUISITIONS AND DIVESTITURES - Schedule of Altra Pro Forma Information (Details) - Altra Merger Agreement - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2023
Business Acquisition [Line Items]
Net Sales	$ 1,649.8	$ 5,093.6
Net Loss Attributable to Regal Rexnord Corporation	$ (126.7)	$ (7.2)
Basic (in dollars per share)	$ (1.91)	$ (0.11)
Assuming Dilution (in dollars per share)	$ (1.91)	$ (0.11)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

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