| Document and Entity Information Document and Entity Information | Oct. 19, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 19, 2021 |
| Entity Registrant Name | NETFLIX INC |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35727 |
| Entity Tax Identification Number | 77-0467272 |
| Entity Address, Address Line One | 100 Winchester Circle |
| Entity Address, City or Town | Los Gatos |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95032 |
| City Area Code | 408 |
| Local Phone Number | 540-3700 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of each class | Common stock, par value $0.001 per share |
| Trading Symbol | NFLX |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001065280 |
| Amendment Flag | false |
