XML 63 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1

Investment In Films and Television Programs and Program Rights (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investment In Films And Television Programs and Program Rights [Abstract]
Fair value film write-downs	$ 2.4	$ 4.4	$ 2.7	$ 6.3

X

- Definition

Fair value film write-downs recorded during the period.

+ References

No definition available.

+ Details

Name:	lgfa_FairValueFilmWriteDowns
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Investment In Films And Television Programs and Program Rights.

+ References

No definition available.

+ Details

Name:	lgfa_InvestmentInFilmsAndTelevisionProgramsandProgramRightsAbstract
Namespace Prefix:	lgfa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration