The percentage of debt that may be redeemed prior to date specified in the debt indenture.

No definition available.

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Namespace Prefix:	arlp_
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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

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+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
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+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 470
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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

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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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Balance Type:	credit
Period Type:	duration

- 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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LONG-TERM DEBT - Senior Notes (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 12, 2024	Apr. 24, 2017	Dec. 31, 2024	Dec. 31, 2023
Issuance of Senior Notes
Debt issuance costs incurred			$ 11,442	$ 12,376
8.625% Senior Notes due 2029
Issuance of Senior Notes
Principal amount	$ 400,000
Term	5 years
Interest rate (as a percent)	8.625%		8.625%
Debt issuance costs incurred	$ 9,700
8.625% Senior Notes due 2029 \| Scenario One
Issuance of Senior Notes
Maximum redeemable debt (as a percent)	35.00%
Redemption price to principal (as a percent)	108.625%
8.625% Senior Notes due 2029 \| Scenario Two
Issuance of Senior Notes
Maximum redeemable debt (as a percent)	40.00%
Redemption price to principal (as a percent)	108.625%
7.5% Senior notes due 2025
Issuance of Senior Notes
Principal amount		$ 400,000
Term		8 years
Interest rate (as a percent)		7.50%	7.50%