| Cover - USD ($) $ in Thousands | 12 Months Ended | ||
| Dec. 31, 2022 | Apr. 28, 2023 | Jun. 30, 2022 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 to Form 10-K (this “Amendment” or “Amendment No. 1”) amends the Annual Report on Form 10-K for the fiscal year ended December 31, 2022 originally filed on March 16, 2023 (the “Original Filing”) by Marathon Digital Holdings, Inc., a Nevada corporation (“Marathon,” the” Company,” “we,” or “us”). We are filing this Amendment to present the information required by Part III of Form 10-K as we will file our definitive proxy statement more than 120 days after the end of our fiscal year ended December 31, 2022. The references in the Original Filing to the incorporation by reference of our definitive proxy statement into Part III of the Original Filing are hereby deleted. In addition, Item 15 of Part IV is being amended solely to include currently dated certifications in accordance with Rule 13a-13(a) promulgated by the SEC under the Securities Exchange Act of 1934, as amended, with paragraphs 3, 4, and 5 omitted, since no financial statements are contained within this Amendment. Because no financial statements are contained within this Amendment, the Company is not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act 0f 2002 or any disclosures with respect to Items 307 or 308 of Regulation S-K | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Document Period End Date | Dec. 31, 2022 | ||
| Document Fiscal Period Focus | FY | ||
| Document Fiscal Year Focus | 2022 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity File Number | 001-36555 | ||
| Entity Registrant Name | MARATHON DIGITAL HOLDINGS, INC. | ||
| Entity Central Index Key | 0001507605 | ||
| Entity Tax Identification Number | 01-0949984 | ||
| Entity Incorporation, State or Country Code | NV | ||
| Entity Address, Address Line One | 101 NE Third Avenue | ||
| Entity Address, Address Line Two | Suite 1200 | ||
| Entity Address, City or Town | Fort Lauderdale | ||
| Entity Address, State or Province | FL | ||
| Entity Address, Postal Zip Code | 33301 | ||
| City Area Code | 702 | ||
| Local Phone Number | 945-2773 | ||
| Title of 12(b) Security | Common Stock | ||
| Trading Symbol | MARA | ||
| Security Exchange Name | NASDAQ | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 600,000 | ||
| Entity Common Stock, Shares Outstanding | 167,247,030 | ||
| ICFR Auditor Attestation Flag | true | ||
| Auditor Firm ID | 688 | ||
| Auditor Name | Marcum LLP | ||
| Auditor Location | Costa Mesa, CA |
