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PARTNERS' CAPITAL - Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands									9 Months Ended		12 Months Ended
	Nov. 14, 2023	Aug. 14, 2023	May 15, 2023	Feb. 14, 2023	Nov. 14, 2022	Aug. 12, 2022	May 13, 2022	Feb. 14, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
PARTNERS' CAPITAL
Quarterly distribution paid (in dollars per unit)	$ 0.7000	$ 0.7000	$ 0.7000	$ 0.7000	$ 0.5000	$ 0.4000	$ 0.3500	$ 0.2500	$ 2.8000		$ 1.5000
Total Cash Distribution		$ 90,899	$ 90,930	$ 91,938	$ 65,449	$ 52,338	$ 45,810	$ 32,750	$ 273,767	$ 130,898	$ 196,347

X

- Definition

Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

+ References

No definition available.

+ Details

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Namespace Prefix:	arlp_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

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Balance Type:	credit
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