Description of Business	12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business We are a digital sports entertainment and gaming company. We provide users with online sports betting (“Sportsbook”), online casino (“iGaming”) and daily fantasy sports (“DFS”) product offerings, as well as retail sportsbook, media and other consumer product offerings. We are also involved in the design and development of sports betting and casino gaming software for online and retail sportsbooks and iGaming operators. In May 2018, the Supreme Court (the “Court”) struck down on constitutional grounds the Professional and Amateur Sports Protection Act of 1992 (“PASPA”), a law that prohibited most states from authorizing and regulating sports betting. Since the Court’s decision, many states have legalized sports betting. As of December 31, 2023, 35 U.S. states, the District of Columbia and Puerto Rico have legalized some form of sports betting. Of those 37 legal jurisdictions, 32 have legalized online sports betting. Of those 32 jurisdictions, 30 are live, and DraftKings operates in 23 of them. The U.S jurisdictions with statutes legalizing iGaming are Connecticut, Delaware, Michigan, New Jersey, Pennsylvania, Rhode Island and West Virginia. As of December 31, 2023, we operate our online sports betting product offering in Arizona, Colorado, Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Massachusetts, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, Tennessee, Virginia, West Virginia, Wyoming and Ontario, Canada and we operate retail sportsbooks in Arizona, Colorado, Connecticut, Illinois, Iowa, Kansas, Louisiana, Michigan, Mississippi, New Hampshire, New Jersey and Washington. As of December 31, 2023, the Company offers its iGaming product offering in Connecticut, Michigan, New Jersey, Pennsylvania, West Virginia and Ontario, Canada. The Company also has arrangements in place with land-based casinos to expand operations into additional states upon the passing of relevant legislation, the issuance of related regulations and the receipt of required licenses. As further discussed in Note 3 hereof entitled “Acquisition of Golden Nugget Online Gaming, Inc.,” on May 5, 2022 (the “GNOG Closing Date”), DraftKings Inc. (formerly New Duke Holdco, Inc.) consummated the acquisition of Golden Nugget Online Gaming, Inc., a Delaware corporation (together with its subsidiaries unless the context requires otherwise, “GNOG”), pursuant to a definitive agreement and plan of merger, dated August 9, 2021 (the “GNOG Merger Agreement”), in an all-stock transaction (the “GNOG Transaction”). In connection with the GNOG Transaction, DraftKings Inc. undertook a holding company reorganization whereby (i) each share of DraftKings Holdings Inc. (formerly DraftKings Inc.), a Nevada corporation (“Old DraftKings”), Class A common stock and Class B common stock was converted on a one-for-one basis into a share of DraftKings Inc. Class A common stock and Class B common stock, respectively, and (ii) DraftKings Inc. became the going-forward public company and the direct parent company of both Old DraftKings and GNOG. DraftKings Inc. is the registrant filing this Annual Report on Form 10-K as the successor registrant for Old DraftKings. Unless otherwise indicated or the context otherwise requires, the terms “DraftKings”, the “Company”, “we”, “us” and “our” refer to DraftKings Inc. (or, in respect of periods prior to the GNOG Closing Date, Old DraftKings), together with its consolidated subsidiaries.

We are a digital sports entertainment and gaming company. We provide users with online sports betting (“Sportsbook”), online casino (“iGaming”) and daily fantasy sports (“DFS”) product offerings, as well as retail sportsbook, media and other consumer product offerings. We are also involved in the design and development of sports betting and casino gaming software for online and retail sportsbooks and iGaming operators.

In May 2018, the Supreme Court (the “Court”) struck down on constitutional grounds the Professional and Amateur Sports Protection Act of 1992 (“PASPA”), a law that prohibited most states from authorizing and regulating sports betting. Since the Court’s decision, many states have legalized sports betting. As of December 31, 2023, 35 U.S. states, the District of Columbia and Puerto Rico have legalized some form of sports betting. Of those 37 legal jurisdictions, 32 have legalized online sports betting. Of those 32 jurisdictions, 30 are live, and DraftKings operates in 23 of them. The U.S jurisdictions with statutes legalizing iGaming are Connecticut, Delaware, Michigan, New Jersey, Pennsylvania, Rhode Island and West Virginia.

As of December 31, 2023, we operate our online sports betting product offering in Arizona, Colorado, Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Massachusetts, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, Tennessee, Virginia, West Virginia, Wyoming and Ontario, Canada and we operate retail sportsbooks in Arizona, Colorado, Connecticut, Illinois, Iowa, Kansas, Louisiana, Michigan, Mississippi, New Hampshire, New Jersey and Washington. As of December 31, 2023, the Company offers its iGaming product offering in Connecticut, Michigan, New Jersey, Pennsylvania, West Virginia and Ontario, Canada. The Company also has arrangements in place with land-based casinos to expand operations into additional states upon the passing of relevant legislation, the issuance of related regulations and the receipt of required licenses.

As further discussed in Note 3 hereof entitled “Acquisition of Golden Nugget Online Gaming, Inc.,” on May 5, 2022 (the “GNOG Closing Date”), DraftKings Inc. (formerly New Duke Holdco, Inc.) consummated the acquisition of Golden Nugget Online Gaming, Inc., a Delaware corporation (together with its subsidiaries unless the context requires otherwise, “GNOG”), pursuant to a definitive agreement and plan of merger, dated August 9, 2021 (the “GNOG Merger Agreement”), in an all-stock transaction (the “GNOG Transaction”). In connection with the GNOG Transaction, DraftKings Inc. undertook a holding company reorganization whereby (i) each share of DraftKings Holdings Inc. (formerly DraftKings Inc.), a Nevada corporation (“Old DraftKings”), Class A common stock and Class B common stock was converted on a one-for-one basis into a share of DraftKings Inc. Class A common stock and Class B common stock, respectively, and (ii) DraftKings Inc. became the going-forward public company and the direct parent company of both Old DraftKings and GNOG. DraftKings Inc. is the registrant filing this Annual Report on Form 10-K as the successor registrant for Old DraftKings. Unless otherwise indicated or the context otherwise requires, the terms “DraftKings”, the “Company”, “we”, “us” and “our” refer to DraftKings Inc. (or, in respect of periods prior to the GNOG Closing Date, Old DraftKings), together with its consolidated subsidiaries.