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Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Feb. 02, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K/A    
Amendment Flag true    
Document Period End Date Dec. 31, 2023    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Trading Symbol AMWL    
Entity Registrant Name American Well Corporation    
Entity Central Index Key 0001393584    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Document Annual Report true    
Document Transition Report false    
ICFR Auditor Attestation Flag true    
Security Exchange Name NYSE    
Title of 12(b) Security Class A common stock, par value of $0.01 per share    
Entity File Number 001-39515    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 20-5009396    
Entity Address, Address Line One 75 State Street    
Entity Address, Address Line Two 26th Floor    
Entity Address, City or Town Boston    
Document Financial Statement Error Correction [Flag] false    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02109    
City Area Code 617    
Local Phone Number 204-3500    
Entity Public Float     $ 515
Auditor Firm ID 238    
Auditor Name PricewaterhouseCoopers LLP    
Auditor Location Boston, Massachusetts, United States    
Documents Incorporated by Reference

The Registrant intends to file a definitive proxy statement pursuant to Regulation 14A relating to the 2024 Annual Meeting of Stockholders within 120 days of the end of the Registrant’s fiscal year ended December 31, 2023. Portions of such definitive proxy statement are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein.

    
Amendment Description This Amendment No. 1 on Form 10-K/A (“Amendment No. 1”) to the Annual Report on Form 10-K of American Well Corporation for the fiscal year ended December 31, 2023, originally filed with the Securities and Exchange Commission on February 15, 2024 (the “Original Filing”), is being filed to correct a typographical error in the Original Filing to reflect the correct signing date of the Report of Independent Registered Public Accounting Firm of PricewaterhouseCoopers LLP.This Amendment No. 1 is being filed solely to correct the date within the Report of Independent Registered Public Accounting Firm. This Amendment No. 1 includes: Item 8 of Part II, “Financial Statements and Supplementary Data” and Item 9A, in its entirety and without change from the Original Filing other than the correction of the signing date of the Report of Independent Registered Public Accounting Firm.In addition, pursuant to the rules of the SEC, the exhibit list included herewith reflects currently-dated certifications from the Company’s co-Chief Executive Officers and Chief Financial Officer, which are filed as exhibits to this Amendment No. 1.Except for the foregoing amended information, this Amendment No. 1 does not amend or update any other information contained in the Original Filing, or reflect any events that have occurred after the filing of the Original Filing. Accordingly, this Amendment No. 1 should be read in conjunction with the Original Filing.    
Common Class A [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   256,306,641  
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   27,390,397  
Common Class C [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   5,555,555