XML 180 R141.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Related Party Transactions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2015 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016 | May 21, 2018
Related Party Transaction [Line Items] |  |  |  |  |
Common shares agreed to be purchased (in shares) | 5,000,000 |  |  |  |
Common shares, no par value | $ 0 |  |  |  |
Related party expenses incurred |  |  |  | $ 0.8 |
Investment in equity method investees |  | $ 53.4 | $ 20.6 | 16.8 |
Director |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party, ownership percentage of entity |  | 100.00% |  |  |
Related party transaction, amounts paid |  | $ 0.1 | 0.0 |  |
Equity Method Investees |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party expenses incurred |  | 22.0 | 10.5 | 12.3 |
Atom Tickets | Equity Method Investees |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Investment in equity method investees |  | $ 10.0 | $ 0.0 | 7.9 |
Class A Voting Common Shares |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Common shares, no par value |  | $ 0 | $ 0 |  |
Class A Voting Common Shares | Subsequent Event | Chairman of the Board of Directors |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of common stock outstanding held by Mark H. Rachesky |  |  |  |  | 18.50%
Class B Non-Voting Common Shares |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Common shares, no par value |  | $ 0 | $ 0 |  |
Class B Non-Voting Common Shares | Subsequent Event | Chairman of the Board of Directors |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of common stock outstanding held by Mark H. Rachesky |  |  |  |  | 11.70%
Voting Agreement | Chairman of the Board of Directors |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Maximum out-of-pocket expenses reimbursable |  |  | $ 1.6 |  |
Related party expenses incurred |  |  | 0.5 |  |
Voting Agreement | Director |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Maximum out-of-pocket expenses reimbursable |  |  | 1.6 |  |
Related party expenses incurred |  |  | 1.5 |  |
Other | Director |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party expenses incurred |  | $ 5.6 | $ 1.0 |  |
Maximum | Director |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party transaction, amounts paid |  |  |  | $ 0.1 |

X
- Definition Number of common shares purchased by shareholders. + References No definition available. + Details
Name: | lgfa_CommonSharesPurchasedByShareholders
Namespace Prefix: | lgfa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the entity's common stock outstanding owned by a related party. + References No definition available. + Details
Name: | lgfa_CommonStockOutstandingPercentageOwnedByRelatedParty
Namespace Prefix: | lgfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related party, percentage owned of entity. + References No definition available. + Details
Name: | lgfa_RelatedPartyOwnershipPercentageofEntity
Namespace Prefix: | lgfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Maximum Expenses Reimbursable to Related Party + References No definition available. + Details
Name: | lgfa_RelatedPartyTransactionMaximumExpensesReimbursabletoRelatedParty
Namespace Prefix: | lgfa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Face amount per share of no-par value common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockNoParValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash outflow associated with the purchase of or advances to an 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 -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 + Details
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_EquityMethodInvesteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=lgfa_AtomTicketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_BoardOfDirectorsChairmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=lgfa_VotingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=lgfa_OtherRelatedPartyTransactionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |