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Net Income (Loss) Per Share (Basic) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015
Numerator: |  |  |  |  |
Net income (loss) attributable to Lions Gate Entertainment Corp. shareholders |  | $ (31) | $ 41 | $ (47) | $ 39
Denominator: |  |  |  |  |
Weighted average common shares outstanding (in shares) | [1] | 161.4 | 149.5 | 152.2 | 148.5
Basic net income (loss) per common share (in usd per share) |  | $ (0.19) | $ 0.27 | $ (0.31) | $ 0.26
[1] | The weighted average common shares outstanding for the three and nine months ended December 31, 2016 do not include the equity portion of the merger consideration related to the dissenting Starz shareholders as discussed in Note 2 and Note 16.

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