Unaudited Condensed Consolidated Statement of Equity - 6 months ended Sep. 30, 2017 - USD ($) shares in Millions, $ in Millions	Total	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Lions Gate Entertainment Corp. Shareholders' Equity	Noncontrolling Interests	[1]	Class A Voting Shares Common Shares	Class B Non-Voting Shares Common Shares
Beginning balance, shares at Mar. 31, 2017							81.1	126.4
Beginning balance at Mar. 31, 2017	$ 2,514.4	$ 10.6	$ (16.0)	$ 2,514.4	$ 0.0		$ 605.7	$ 1,914.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options, shares							0.1	1.3
Exercise of stock options	22.5			22.5			$ 1.4	$ 21.1
Share-based compensation, net, shares							0.1	0.0
Share-based compensation, net	39.4			39.4			$ 10.6	$ 28.8
Issuance of common shares to directors for services	0.2			0.2			$ 0.1	$ 0.1
Issuance of common shares to directors for services, shares							0.0	0.0
Noncontrolling interests	2.7				2.7
Net income (loss)	187.4	189.3		189.3	(1.9)
Other comprehensive income	4.5	0.0	4.5	4.5
Noncontrolling interest adjustments to redemption value	(5.1)	(5.1)		(5.1)
Ending balance, shares at Sep. 30, 2017							81.3	127.7
Ending balance at Sep. 30, 2017	$ 2,826.8	$ 255.6	$ (11.5)	$ 2,826.0	$ 0.8		$ 617.8	$ 1,964.1

[1] Excludes redeemable noncontrolling interests, which are reflected in temporary equity (see Note 9).