v3.8.0.1
Document and Entity Information - USD ($)
12 Months Ended
Mar. 31, 2018
May 18, 2018
Sep. 29, 2017
Entity Registrant Name RALPH LAUREN CORP    
Entity Central Index Key 0001037038    
Document Type 10-K    
Document Period End Date Mar. 31, 2018    
Amendment Flag false    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --03-31    
Entity Filer Category Large Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 4,868,476,408
Common stock, Class A      
Entity Common Stock, Shares Outstanding   55,673,351  
Common stock, Class B      
Entity Common Stock, Shares Outstanding   25,881,276