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LONG-TERM DEBT AND FINANCING ARRANGEMENTS - Letters of Credit & Surety Bonds (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Arrangements |  |
Outstanding letters of credit | $ 10.6 |
Accounts receivable securitization program |  |
Financing Arrangements |  |
Outstanding letters of credit | 10.0 |
Surety bonds |  |
Financing Arrangements |  |
Outstanding surety bonds under uncollateralized bond programs | $ 62.6 | $ 50.9

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- Definition Represents the total amount of outstanding surety bonds under the uncollateralized bond program related to the self-insurance program as of the reporting date. + References No definition available. + Details
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Namespace Prefix: | arcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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

X
- 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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |