Disposal Group, Including Discontinued Operations, Equity Method Investment Ownership Sold

No definition available.

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Namespace Prefix:	lgfa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment, net of tax.

+ References

No definition available.

+ Details

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Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

Name:	us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events (Details) - USD ($) $ in Millions		12 Months Ended
Subsequent Events (Details) - USD ($) $ in Millions	May 11, 2017	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Subsequent Event [Line Items]
Proceeds from the sale of equity method investees		$ 0.0	$ 0.0	$ 14.5
Distribution from equity method investee		$ 14.0	$ 0.0	$ 7.8
Disposed by sale \| EPIX \| Subsequent Event
Subsequent Event [Line Items]
Percentage sold of equity interest	100.00%
Proceeds from the sale of equity method investees	$ 397.2
Gain on sale of equity method investee	200.0
Gain on sale of equity method investment, net of tax	$ 125.0
Lions Gate Films Holdings Co No 2 Inc, Viacom and Paramount [Member] \| Disposed by sale \| EPIX \| Subsequent Event
Subsequent Event [Line Items]
Percentage sold of equity interest	80.91%
Lions Gate \| Disposed by sale \| EPIX \| Subsequent Event
Subsequent Event [Line Items]
Percentage sold of equity interest	31.15%
Proceeds from the sale of equity method investees	$ 373.8
Distribution from equity method investee	$ 23.4