| Cover Page | 12 Months Ended |
| Dec. 31, 2019shares | |
| Document Information [Line Items] | |
| Amendment Flag | true |
| Document Type | 20-F/A |
| Document Fiscal Year Focus | 2019 |
| Document Fiscal Period Focus | FY |
| Entity Central Index Key | 0001549802 |
| Current Fiscal Year End Date | --12-31 |
| Entity Registrant Name | JD.com, Inc. |
| Document Period End Date | Dec. 31, 2019 |
| Entity Well-known Seasoned Issuer | Yes |
| Entity Voluntary Filers | No |
| Entity Current Reporting Status | Yes |
| Entity Filer Category | Large Accelerated Filer |
| Entity Emerging Growth Company | false |
| Entity Shell Company | false |
| Document Annual Report | true |
| Document Registration Statement | false |
| Document Transition Report | false |
| Entity File Number | 001-36450 |
| Document Shell Company Report | false |
| Document Accounting Standard | U.S. GAAP |
| Entity Interactive Data Current | Yes |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 20th Floor, Building A |
| Entity Address, Address Line Two | No. 18 Kechuang 11 Street |
| Entity Address, Address Line Three | Yizhuang Economic and Technological Development Zone |
| Entity Address, City or Town | Daxing District |
| Entity Address, Postal Zip Code | 101111 |
| Entity Address, Country | CN |
| Amendment Description | This Amendment No. 1 on Form 20-F/A (the “Amendment”) is being filed by JD.com, Inc. (the “Company,” “we,” “our,” or “us”) to amend the Company’s Annual Report on Form 20-F for the fiscal year ended December 31, 2019, originally filed with the U.S. Securities Exchange Commission on April 15, 2020 (the “Original Filing”). The Company is filing this Amendment to include the financial statements and related notes of Dada Nexus Limited (“Dada”), Bitauto Holdings Limited (“Bitauto”) and Tuniu Corporation (“Tuniu”), as required by Rule 3-09 of Regulation S-X under the Securities Exchange Act of 1934, as amended (“Rule 3-09”). Rule 3-09 requires, among other things, that separate financial statements for unconsolidated subsidiaries and investees accounted for by the equity method to be included in the Form 20-F when such entities are individually significant. We have determined that our equity method investments in Dada, Bitauto and Tuniu, each of which is not consolidated in our financial statements, were significant under Rule 1-02(w) and Rule 3-09 of Regulation S-X in relation to our financial results for the year ended December 31, 2017, and our equity method investments in Dada was also significant under Rule 1-02(w) and Rule 3-09 of Regulation S-X in relation to our financial results for the year ended December 31, 2018. This Amendment is therefore filed to supplement the Original Filing with the inclusion of the financial statements and related notes of Dada, Bitauto and Tuniu as of December 31, 2017, 2018 and 2019 and for the years ended December 31, 2017, 2018 and 2019 (the “Financial Statements of Dada, Bitauto and Tuniu”).This Form 20-F/A consists solely of the cover page, this explanatory note, the Financial Statements of Dada, Bitauto and Tuniu, certifications by our chief executive officer and chief financial officer, and the consents of the independent auditor of each of Dada, Bitauto and Tuniu. This Amendment does not affect any other parts of, or exhibits to, the Original Filing, nor does it reflect events occurring after the date of the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing and with our filings with the U.S. Securities and Exchange Commission subsequent to the Original Filing. |
| Business contact | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 20th Floor, Building A |
| Entity Address, Address Line Two | No. 18 Kechuang 11 Street |
| Entity Address, Address Line Three | Yizhuang Economic and Technological Development Zone |
| Entity Address, City or Town | Daxing District |
| Entity Address, Postal Zip Code | 101111 |
| Contact Personnel Name | Sidney Xuande Huang |
| Entity Address, Country | CN |
| Contact Personnel Email Address | Email: ir@jd.com |
| American depositary shares | |
| Document Information [Line Items] | |
| Trading Symbol | JD |
| Title of 12(b) Security | American depositary shares |
| Security Exchange Name | NASDAQ |
| Class A ordinary shares | |
| Document Information [Line Items] | |
| No Trading Symbol Flag | true |
| Title of 12(b) Security | Class A ordinary shares |
| Security Exchange Name | NASDAQ |
| Entity Common Stock, Shares Outstanding | 2,483,366,264 |
| Class B ordinary shares | |
| Document Information [Line Items] | |
| Entity Common Stock, Shares Outstanding | 453,672,011 |
