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Derivative Financial Instruments (Details) SFr in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Jun. 28, 2025 USD ($)	Mar. 29, 2025 USD ($)	Aug. 12, 2024 USD ($)	Aug. 12, 2024 CHF (SFr)	Dec. 30, 2022 USD ($)
Derivative Financial Instruments [Line Items]
Notional amount	$ 100.0		$ 80.0	SFr 69.4
Maturity years			3 years	3 years	3 years
Fixed interest rate	4.455%		2.77%	2.77%
Other comprehensive loss derivative component	$ 6.4	$ 0.2
Year 1 [Member]
Derivative Financial Instruments [Line Items]
Notional amount	600.0
Year 2 [Member]
Derivative Financial Instruments [Line Items]
Notional amount	400.0
Year 3 [Member]
Derivative Financial Instruments [Line Items]
Notional amount	$ 100.0
Interest Rate Swap [Member]
Derivative Financial Instruments [Line Items]
Notional amount					$ 600.0
Percent of debt bearing fixed interest rate	66.00%
Other comprehensive loss derivative component	$ 0.1	$ 0.2

X

- Definition

Amount of other comprehensive Loss derivative component.

+ References

No definition available.

+ Details

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

X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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- Details

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- Details

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X

- Details

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X

- Details

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