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CREDIT FACILITIES AND CONVERTIBLE SENIOR NOTES - Asset Based Credit Facility (Detail)
$ in Millions
 12 Months Ended
Jul. 31, 2025
USD ($)
Jan. 31, 2026
USD ($)
Line of Credit Facility    
Debt instrument covenant description   The ABL Credit Agreement does not contain any significant financial ratio covenants or coverage ratio covenants other than a consolidated fixed charge coverage ratio (“FCCR”) covenant based on the ratio of (i) consolidated EBITDA to the amount of (ii) debt service costs plus certain other amounts, including dividends and distributions and prepayments of debt as defined in the ABL Credit Agreement (the “FCCR Covenant”). The FCCR Covenant only applies in certain limited circumstances, including when the unused availability under the ABL Credit Agreement drops below the greater of (A) $40 million and (B) an amount based on 10% of the total borrowing availability at the time. The FCCR Covenant ratio is set at 1.0 and measured on a trailing twelve-month basis. As of January 31, 2026, RHI was in compliance with the FCCR Covenant.
Debt instrument covenant compliance   As of January 31, 2026, RHI was in compliance with the FCCR Covenant
Twelfth Amended and Restated Credit Agreement | RHI, Canadian subsidiary and other subsidiaries    
Line of Credit Facility    
FCCR Covenant, threshold amount $ 40  
FCCR Covenant, threshold amount (percentage) 10.00%  
FCCR Covenant ratio 1  
Revolving line of credit | RHI, Canadian subsidiary and other subsidiaries    
Line of Credit Facility    
Line of Credit, outstanding amount   $ 43
Line of credit facility remaining borrowing capacity   $ 402
FCCR Covenant, threshold amount (percentage)   10.00%
Amount available for borrowing   $ 342
Outstanding revolving line of credit   $ 20
Revolving line of credit | RHI, Canadian subsidiary and other subsidiaries | Maximum    
Line of Credit Facility    
Line of credit facility, maximum borrowing capacity including accordion feature $ 900  
Revolving line of credit | RHI, Canadian subsidiary and other subsidiaries | Minimum    
Line of Credit Facility    
Line of credit facility, maximum borrowing capacity 600  
Revolving line of credit | Twelfth Amended and Restated Credit Agreement | RHI, Canadian subsidiary and other subsidiaries    
Line of Credit Facility    
Line of credit facility, maximum borrowing capacity 600  
Line of credit facility, accordion feature 300  
Floor interest rate   0.00%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   us-gaap:SecuredOvernightFinancingRateSofrMember
Revolving line of credit | Twelfth Amended and Restated Credit Agreement | Restoration Hardware Canada, Inc.    
Line of Credit Facility    
Line of credit facility, maximum borrowing capacity 10  
Revolving line of credit | Twelfth Amended and Restated Credit Agreement | RH Geneva Srl    
Line of Credit Facility    
Line of credit facility, maximum borrowing capacity $ 100