XML 12 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document and Entity Information - shares
 9 Months Ended
Dec. 31, 2018
Feb. 04, 2019
Document Information [Line Items]    
Entity Registrant Name LIONS GATE ENTERTAINMENT CORP /CN/  
Entity Central Index Key 0000929351  
Document Type 10-Q  
Document Period End Date Dec. 31, 2018  
Amendment Flag false  
Entity Emerging Growth Company false  
Entity Small Business false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --03-31  
Entity Filer Category Large Accelerated Filer  
Class A Voting Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   82,541,433
Class B Non-Voting Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   133,029,193