v3.8.0.1
Document and Entity Information - shares
6 Months Ended
Sep. 30, 2017
Nov. 03, 2017
Entity Registrant Name RALPH LAUREN CORP  
Entity Central Index Key 0001037038  
Document Type 10-Q  
Document Period End Date Sep. 30, 2017  
Amendment Flag false  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --03-31  
Entity Filer Category Large Accelerated Filer  
Class A common stock    
Entity Common Stock, Shares Outstanding   55,394,773
Class B common stock    
Entity Common Stock, Shares Outstanding   25,881,276