| Document and Entity Information | Jun. 03, 2020 |
| Cover [Abstract] | |
| Entity Registrant Name | AMAZON COM INC |
| Amendment Flag | false |
| Entity Central Index Key | 0001018724 |
| Document Type | 8-K |
| Document Period End Date | Jun. 3, 2020 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 000-22513 |
| Entity Tax Identification Number | 91-1646860 |
| Entity Address, Address Line One | 410 Terry Avenue North |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98109-5210 |
| City Area Code | (206) |
| Local Phone Number | 266-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $.01 per share |
| Trading Symbol | AMZN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
