XML 40 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information - USD ($)
 12 Months Ended
Mar. 31, 2018
May 21, 2018
Sep. 30, 2017
Document Information [Line Items]      
Entity Registrant Name LIONS GATE ENTERTAINMENT CORP /CN/    
Entity Central Index Key 0000929351    
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 Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 5,273,583,977
Class A Voting Common Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   81,963,808  
Class B Non-Voting Common Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   129,432,497