CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 71.1	$ 66.3	$ 219.3	$ 142.3
Other Comprehensive Income (Loss) Net of Tax:
Foreign Currency Translation Adjustments	(15.6)	36.7	(27.3)	(2.8)
Hedging Activities:
Increase (Decrease) in Fair Value of Hedging Activities, Net of Tax Effects of $(1.1) Million and $1.9 Million for the Three Months Ended October 2, 2021 and September 26, 2020 and $7.7 Million and $(3.9) Million for the Nine Months Ended October 2, 2021 and September 26, 2020, Respectively	(3.4)	6.0	24.5	(12.3)
Reclassification of (Gains) Losses included in Net Income, Net of Tax Effects of $(3.5) Million and $2.0 Million for the Three Months Ended October 2, 2021 and September 26, 2020 and $(9.0) Million and $1.9 Million for the Nine Months Ended October 2, 2021 and September 26, 2020, Respectively	(11.1)	6.2	(28.4)	5.8
Pension and Post Retirement Plans:
Reclassification Adjustments for Pension and Post Retirement Benefits included in Net Income, Net of Tax Effects of $0.1 Million for the Three Months Ended October 2, 2021 and September 26, 2020 and $0.3 Million and $0.1 Million for the Nine Months Ended October 2, 2021 and September 26, 2020, Respectively	0.3	0.1	1.0	0.3
Other Comprehensive Income (Loss)	(29.8)	49.0	(30.2)	(9.0)
Comprehensive Income	41.3	115.3	189.1	133.3
Less: Comprehensive Income Attributable to Noncontrolling Interests	1.4	2.2	4.8	3.5
Comprehensive Income Attributable to Regal Rexnord Corporation	$ 39.9	$ 113.1	$ 184.3	$ 129.8