Accounts Payable, Accrued Expenses and Other Current Liabilities - Contract Liabilities (Detail) $ in Millions	3 Months Ended	6 Months Ended
Aug. 01, 2020 USD ($)	Aug. 03, 2019 USD ($)	Aug. 01, 2020 USD ($)	Aug. 03, 2019 USD ($)
Contract Liabilities
Revenue related to previous deferrals	$ 6.5	$ 4.6	$ 10.6	$ 9.3
Gift card breakage recorded	$ 0.2	$ 0.4	$ 0.8	$ 0.8
Gift card and merchandise credit liabilities expected to be recognized when gift cards are redeemed, percent			70

Represents the percentage of gift card and merchandise credit liabilities that will be recognized when the gift cards are redeemed by customers.

No definition available.

+ Details

Name:	rh_ExpectedGiftCardAndMerchandiseCreditLiabilitiesRecognizedPercent
Namespace Prefix:	rh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Amount of revenue recognized arising from contract liability from change in timeframe for performance obligation to be satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

+ Details

Name:	us-gaap_ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

+ Details

Name:	us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration