Represents the ratio of cash flow to interest expense.

No definition available.

Name:	ahgp_CashFlowToInterestExpenseRatioActual
Namespace Prefix:	ahgp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period over which the ratios required under the terms of the debt agreement are calculated.

+ References

No definition available.

+ Details

Name:	ahgp_DebtArrangementsPeriodOverWhichRatiosAreCalculated
Namespace Prefix:	ahgp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the cash flow to interest expense ratio required under the terms of the debt agreement.

+ References

No definition available.

+ Details

Name:	ahgp_DebtInstrumentCovenantsCashFlowToInterestExpenseRatio
Namespace Prefix:	ahgp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the debt to cash flow ratio required under the terms of the debt agreement.

+ References

No definition available.

+ Details

Name:	ahgp_DebtInstrumentCovenantsDebtToCashFlowRatio
Namespace Prefix:	ahgp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the fixed charge coverage ratio required after distributions under the terms of the debt agreement.

+ References

No definition available.

+ Details

Name:	ahgp_DebtInstrumentCovenantsFixedChargeCoverageRatio
Namespace Prefix:	ahgp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of variable interest rate benchmarks allowed under terms of debt instrument.

+ References

No definition available.

+ Details

Name:	ahgp_DebtInstrumentNumberOfVariableRateBenchmarks
Namespace Prefix:	ahgp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the ratio of debt to cash flow.

+ References

No definition available.

+ Details

Name:	ahgp_DebtToCashFlowRatioActual
Namespace Prefix:	ahgp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of commitments under the credit facility that will expire.

+ References

No definition available.

+ Details

Name:	ahgp_LineOfCreditFacilityMaximumBorrowingCapacityCommitmentExpiring
Namespace Prefix:	ahgp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

+ Details

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

- Definition

Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=ahgp_AllianceResourcePartnersLpSeriesBSeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ahgp_FourthAmendedAndRestatedCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=ahgp_LendersProvidingInitialCommitmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=ahgp_LendersProvidingReducedCommitmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioPreviouslyReportedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=ahgp_LendersProvidingExtensionCommitmentApril2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ahgp_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ahgp_SwinglineSubfacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ahgp_AllianceResourcePartnersLpCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ahgp_AllianceResourcePartnersLpRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ahgp_AllianceResourcePartnersLpTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis=ahgp_AllianceResourceOperatingPartnersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ahgp_AllianceResourcePartnersDebtArrangementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis=ahgp_AllianceResourcePartnersLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT - ARLP Debt Arrangements (Details)		1 Months Ended	9 Months Ended		12 Months Ended
LONG-TERM DEBT - ARLP Debt Arrangements (Details)	Jan. 27, 2017 USD ($) item	May 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	May 23, 2017 USD ($)	Apr. 03, 2017 USD ($)	Dec. 31, 2016 USD ($)
Long-Term Debt
Borrowings			$ 500,000,000		$ 500,000,000			$ 550,000,000
Debt issuance costs incurred			16,221,000
Payments on term loan			50,000,000	$ 106,250,000
ARLP Series B Senior Notes
Long-Term Debt
Borrowings								145,000,000
ARLP Credit Agreement \| ARLP Revolving credit facility \| Initial Commitment expiring May 23, 2017
Long-Term Debt
Maximum borrowing capacity	$ 776,500,000
ARLP Credit Agreement \| ARLP Revolving credit facility \| Reduced Commitment as of May 23. 2017
Long-Term Debt
Maximum borrowing capacity						$ 494,750,000
Commitment expiring						$ 33,500,000
ARLP Credit Agreement \| ARLP Revolving credit facility \| Reduced Commitment as of May 23. 2017 \| Before amendment
Long-Term Debt
Maximum borrowing capacity	479,750,000
ARLP Credit Agreement \| ARLP Revolving credit facility \| Extended Commitment to May 23, 2021
Long-Term Debt
Maximum borrowing capacity							$ 461,250,000
ARLP Credit Agreement \| ARLP Term loan
Long-Term Debt
Aggregate principal amount	50,000,000
Payments on term loan		$ 50,000,000
ARLP Credit Agreement \| ARLP Letters of credit subfacility
Long-Term Debt
Maximum borrowing capacity	125,000,000
ARLP Credit Agreement \| ARLP Swingline subfacility
Long-Term Debt
Maximum borrowing capacity	$ 15,000,000
ARLP Replaced Credit Agreement \| Replaced Revolving Credit Facility
Long-Term Debt
Borrowings								255,000,000
ARLP Replaced Credit Agreement \| ARLP Replaced Term Loan
Long-Term Debt
Borrowings								$ 50,000,000
Intermediate Partnership \| ARLP Debt Arrangements
Long-Term Debt
ARLP debt arrangements requirements, period over which the ratios are required to be maintained	12 months				12 months
Actual debt to cash flow ratio for trailing twelve months					0.84
Actual cash flow to interest expense ratio for trailing twelve months					19.2
Intermediate Partnership \| ARLP Debt Arrangements \| Maximum
Long-Term Debt
ARLP debt arrangements requirements, fixed charge coverage ratio	1.15
ARLP debt arrangements requirements, debt to cash flow ratio	2.50
Intermediate Partnership \| ARLP Debt Arrangements \| Minimum
Long-Term Debt
ARLP debt arrangements requirements, cash flow to interest expense ratio	3.0
Intermediate Partnership \| ARLP Debt Arrangements \| Before amendment \| Maximum
Long-Term Debt
ARLP debt arrangements requirements, fixed charge coverage ratio	1.25
ARLP debt arrangements requirements, debt to cash flow ratio	2.25
Intermediate Partnership \| ARLP Credit Agreement \| ARLP Revolving credit facility
Long-Term Debt
Number of benchmarks \| item	3
Intermediate Partnership \| ARLP Credit Agreement \| ARLP Series B Senior Notes
Long-Term Debt
Aggregate principal amount	$ 145,000,000
Interest rate (as a percent)	6.72%
Intermediate Partnership \| ARLP Replaced Credit Agreement \| Replaced Revolving Credit Facility
Long-Term Debt
Maximum borrowing capacity	$ 700,000,000
Intermediate Partnership \| ARLP Replaced Credit Agreement \| ARLP Replaced Term Loan
Long-Term Debt
Aggregate principal amount	$ 250,000,000
ARLP \| ARLP Credit Agreement \| ARLP Revolving credit facility
Long-Term Debt
Debt issuance costs incurred			8,900,000
Letters of credit outstanding			8,100,000		$ 8,100,000
Line of credit facility, available for borrowing			$ 486,700,000		$ 486,700,000
Annual commitment fee percentage, undrawn portion			0.35%
ARLP \| ARLP Credit Agreement \| ARLP Revolving credit facility \| Eurodollar Rate
Long-Term Debt
Effective interest rate (as a percent)			3.59%		3.59%