Leases - Assets Held for Sale and Sale-Leaseback Transaction (Detail) $ in Millions	3 Months Ended
May 02, 2020 USD ($)
RH Baby & Child Gallery and Waterworks Showroom [Member]
Sale Leaseback Transaction [Line Items]
Impairment charge on long-lived assets	$ 3.5
Property Plant and Equipment Other Than Leased Assets \| RH Baby & Child Gallery and Waterworks Showroom [Member]
Sale Leaseback Transaction [Line Items]
Impairment charge on long-lived assets	1.5
Leased Assets
Sale Leaseback Transaction [Line Items]
Impairment charge on long-lived assets	$ 2.0

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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Name:	us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration