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PARTNERS' CAPITAL - Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 15, 2024 | Feb. 14, 2024 | Nov. 14, 2023 | Aug. 14, 2023 | May 15, 2023 | Feb. 14, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |
Quarterly distribution paid (in dollars per unit) | $ 0.7000 | $ 0.7000 | $ 0.7000 | $ 0.7000 | $ 0.7000 | $ 0.7000 | $ 1.4000 |  | $ 2.8000
Total Cash Distribution |  | $ 91,246 | $ 90,812 | $ 90,899 | $ 90,930 | $ 91,938 | $ 91,246 | $ 91,938 | $ 364,579

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- 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

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- 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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