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Revenue - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Revenue From Contract With Customer Line Items [Line Items] |  |  |
Contract liability revenue recognized | $ 19,844 | $ 15,947 |
Transaction price allocated to remaining performance obligations | $ 124,274 |  | $ 143,529
Performance obligation percentage of transaction price to recognized in the next twelve months | 71.00% |  |
Accounts Receivable [Member] |  |  |
Revenue From Contract With Customer Line Items [Line Items] |  |  |
Unbilled accounts receivable | $ 12,299 |  | $ 13,628

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- Definition Contract with customer liability revenue. + References No definition available. + Details
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Namespace Prefix: | amwl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Percentage of transaction price expected to be recognized in the next twelve months. + References No definition available. + Details
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Namespace Prefix: | amwl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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- Definition Revenue from contract with customer [Line items]. + References No definition available. + Details
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Namespace Prefix: | amwl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -SubTopic 10 -Topic 606 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 + Details
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Namespace Prefix: | us-gaap_
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- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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- Details
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Balance Type: |
Period Type: |