Consolidating Financial Information - Convertible Senior Subordinated Notes (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Mar. 31, 2016
January 2012 Notes | Convertible Senior Subordinated Notes
Consolidating Financial Information [Line Items]
Coupon rate		4.00%
April 2013 Notes | Convertible Senior Subordinated Notes
Consolidating Financial Information [Line Items]
Coupon rate		1.25%
5.25% Senior Notes | Senior Secured Second-Priority Notes
Consolidating Financial Information [Line Items]
Coupon rate		5.25%	5.25%
Lions Gate Entertainment Corp. | Convertible Senior Subordinated Notes
Consolidating Financial Information [Line Items]
Deferred financing costs	$ 964
Lions Gate Entertainment Inc.
Consolidating Financial Information [Line Items]
Percentage ownership of LGEI, the issuer, by parent company guarantor		100.00%