{"cik":1596532,"taxonomy":"us-gaap","tag":"PaymentsToAcquireProductiveAssets","label":"Payments to Acquire Productive Assets","description":"The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.","entityName":"Arista Networks, Inc.","units":{"USD":[{"start":"2018-01-01","end":"2018-12-31","val":23830000,"accn":"0001596532-21-000049","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-19","frame":"CY2018"},{"start":"2019-01-01","end":"2019-12-31","val":15751000,"accn":"0001596532-21-000049","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-19"},{"start":"2019-01-01","end":"2019-12-31","val":15751000,"accn":"0001596532-22-000026","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-15","frame":"CY2019"},{"start":"2020-01-01","end":"2020-12-31","val":15384000,"accn":"0001596532-21-000049","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-19"},{"start":"2020-01-01","end":"2020-12-31","val":15384000,"accn":"0001596532-22-000026","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-15"},{"start":"2020-01-01","end":"2020-12-31","val":15384000,"accn":"0001596532-23-000016","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-14","frame":"CY2020"},{"start":"2021-01-01","end":"2021-12-31","val":64736000,"accn":"0001596532-22-000026","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-15"},{"start":"2021-01-01","end":"2021-12-31","val":64736000,"accn":"0001596532-23-000016","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-14"},{"start":"2021-01-01","end":"2021-12-31","val":64736000,"accn":"0001596532-24-000043","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-13","frame":"CY2021"},{"start":"2022-01-01","end":"2022-12-31","val":44644000,"accn":"0001596532-23-000016","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-14"},{"start":"2022-01-01","end":"2022-12-31","val":44644000,"accn":"0001596532-24-000043","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-13"},{"start":"2022-01-01","end":"2022-12-31","val":44644000,"accn":"0001596532-25-000028","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-19","frame":"CY2022"},{"start":"2023-01-01","end":"2023-12-31","val":34434000,"accn":"0001596532-24-000043","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-13"},{"start":"2023-01-01","end":"2023-12-31","val":34434000,"accn":"0001596532-25-000028","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-19"},{"start":"2023-01-01","end":"2023-12-31","val":34400000,"accn":"0001596532-26-000013","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-17","frame":"CY2023"},{"start":"2024-01-01","end":"2024-12-31","val":32032000,"accn":"0001596532-25-000028","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-19"},{"start":"2024-01-01","end":"2024-12-31","val":32000000,"accn":"0001596532-26-000013","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-17","frame":"CY2024"},{"start":"2025-01-01","end":"2025-12-31","val":119500000,"accn":"0001596532-26-000013","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-17","frame":"CY2025"}]}}