Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Dec. 28, 2024	Dec. 30, 2023	Dec. 28, 2024	Dec. 30, 2023
Statement of Comprehensive Income [Abstract]
Pension and postretirement liability adjustments, net of taxes	$ 0.0	$ 0.1	$ 0.1	$ 0.3
Change in fair value of interest rate swap, net of taxes	0.1	$ 1.0	0.4	$ 0.5
Change in fair value of cross currency swap, net of taxes	$ 0.7		$ 0.1

Represent the amount of change in fair value of cross currency, net of tax benefit.

No definition available.

Name:	rbc_ChangeInFairValueOfCrossCurrencySwapNetOfTaxes
Namespace Prefix:	rbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration