Represents the value of units to be returned under the unit adjustment agreement.

No definition available.

Name:	amch_BusinessCombinationConsiderationSettlementValueOfUnitsReturnedUnderUnitAdjustmentAgreement
Namespace Prefix:	amch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of purchase price allocation adjustment.

+ References

No definition available.

+ Details

Name:	amch_BusinessCombinationPurchasePriceAllocation
Namespace Prefix:	amch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue reclassed that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

No definition available.

+ Details

Name:	amch_ContractWithCustomerLiabilityRevenueReclassed
Namespace Prefix:	amch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the cash received in advance on various revenue streams.

+ References

No definition available.

+ Details

Name:	amch_ContractsWithCustomersCashReceivedInAdvance
Namespace Prefix:	amch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents deferred revenue associated with customer contracts.

+ References

No definition available.

+ Details

Name:	amch_ContractsWithCustomersDeferredRevenue
Namespace Prefix:	amch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the term over which the deferred revenue is to be amortized.

+ References

No definition available.

+ Details

Name:	amch_DeferredRevenueAmortizationPeriod
Namespace Prefix:	amch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of change from application of new guidance compared to guidance in effect prior to change when using transition method for cumulative effect in initial period of application for revenue from contract with customer.

+ References

No definition available.

+ Details

Name:	amch_RevenueInitialApplicationPeriodCumulativeEffectTransitionAmountOfChange
Namespace Prefix:	amch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_ChangeInContractWithCustomerLiabilityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

+ Details

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

- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683

+ Details

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

- Details

Name:	amch_EquityMethodInvestmentActivityByClassificationAxis=amch_ExhibitorServicesAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_AdmissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_FoodAndBeverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=amch_TotalOtherProductAndServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

REVENUE RECOGNITION - Changes in liabilities (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Deferred revenues related to contracts with customers
Begininning balance			$ 376.1
Customer loyalty awards accumulated, net of expirations			81.3	$ 35.2
Foreign currency translation adjustment, net of tax	$ (5.7)	$ 34.4	(101.6)	$ 109.3
Ending balance	288.6		288.6
Exhibitor Services Agreement
Deferred revenues related to contracts with customers
Begininning balance			530.9
Cumulative effect of initially applying ASC 606			$ 52.9
Common Unit Adjustment - surrender of common units			(5.2)
Reclassification revenue, as the result of performance obligations satisfied			$ (10.9)
Ending balance	567.7		$ 567.7
Term of amortization of the exhibitor services agreement (ESA) with NCM			30 years
Accounting Standards Update 2014-09 - Revenue from contracts
Deferred revenues related to contracts with customers
Begininning balance			$ 376.1
Cumulative effect of initially applying ASC 606			(10.0)
Cash received in advance			285.6
Business combination - Nordic purchase price allocation			(2.3)
Foreign currency translation adjustment, net of tax			1.5
Ending balance	$ 288.6		288.6
Accounting Standards Update 2014-09 - Revenue from contracts \| Admissions
Deferred revenues related to contracts with customers
Customer loyalty awards accumulated, net of expirations			21.8
Reclassification revenue, as the result of performance obligations satisfied			(304.0)
Accounting Standards Update 2014-09 - Revenue from contracts \| Food and beverage
Deferred revenues related to contracts with customers
Customer loyalty awards accumulated, net of expirations			39.1
Reclassification revenue, as the result of performance obligations satisfied			(61.5)
Accounting Standards Update 2014-09 - Revenue from contracts \| Total other theatre
Deferred revenues related to contracts with customers
Customer loyalty awards accumulated, net of expirations			3.9
Reclassification revenue, as the result of performance obligations satisfied			$ (61.6)