{"cik":874015,"taxonomy":"us-gaap","tag":"DeferredIncomeTaxExpenseBenefit","label":"Deferred Income Tax Expense (Benefit)","description":"Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.","entityName":"Ionis Pharmaceuticals, Inc.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":-9111000,"accn":"0001104659-13-016208","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28"},{"start":"2012-01-01","end":"2012-12-31","val":-9111000,"accn":"0001104659-14-015019","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-03"},{"start":"2012-01-01","end":"2012-12-31","val":-9111000,"accn":"0001140361-15-009498","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-5916000,"accn":"0001104659-14-015019","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-03"},{"start":"2013-01-01","end":"2013-12-31","val":-5916000,"accn":"0001140361-15-009498","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":-5916000,"accn":"0000874015-16-000112","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-11375000,"accn":"0001140361-15-009498","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":-11375000,"accn":"0000874015-16-000112","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26"},{"start":"2014-01-01","end":"2014-12-31","val":-11375000,"accn":"0001140361-17-009823","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-01","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0000874015-16-000112","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001140361-17-009823","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-01"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0000874015-18-000047","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":0,"accn":"0001140361-17-009823","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-01"},{"start":"2016-01-01","end":"2016-12-31","val":0,"accn":"0000874015-18-000047","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28"},{"start":"2016-01-01","end":"2016-12-31","val":0,"accn":"0000874015-19-000045","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":0,"accn":"0000874015-18-000047","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28"},{"start":"2017-01-01","end":"2017-12-31","val":0,"accn":"0000874015-19-000045","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2017-01-01","end":"2017-12-31","val":0,"accn":"0001140361-20-004500","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":0,"accn":"0000874015-19-000068","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":0,"accn":"0001140361-19-014492","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-08"},{"start":"2018-01-01","end":"2018-09-30","val":0,"accn":"0000874015-19-000130","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"start":"2018-01-01","end":"2018-12-31","val":-290511000,"accn":"0000874015-19-000045","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2018-01-01","end":"2018-12-31","val":-290511000,"accn":"0001140361-20-004500","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02"},{"start":"2018-01-01","end":"2018-12-31","val":-290511000,"accn":"0000874015-21-000056","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-24","frame":"CY2018"},{"start":"2019-01-01","end":"2019-03-31","val":13549000,"accn":"0000874015-19-000068","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09"},{"start":"2019-01-01","end":"2019-03-31","val":13549000,"accn":"0001140361-20-010825","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-06","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":14436000,"accn":"0001140361-19-014492","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-08"},{"start":"2019-01-01","end":"2019-06-30","val":14436000,"accn":"0000874015-20-000115","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-05"},{"start":"2019-01-01","end":"2019-09-30","val":4103000,"accn":"0000874015-19-000130","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"start":"2019-01-01","end":"2019-09-30","val":4103000,"accn":"0000874015-20-000142","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"start":"2019-01-01","end":"2019-12-31","val":-7096000,"accn":"0001140361-20-004500","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02"},{"start":"2019-01-01","end":"2019-12-31","val":-7096000,"accn":"0000874015-21-000056","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-24"},{"start":"2019-01-01","end":"2019-12-31","val":904000,"accn":"0000874015-22-000079","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-25","frame":"CY2019"},{"start":"2020-01-01","end":"2020-03-31","val":-3437000,"accn":"0001140361-20-010825","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-06"},{"start":"2020-01-01","end":"2020-03-31","val":-2288000,"accn":"0000874015-21-000074","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-05","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":-2513000,"accn":"0000874015-20-000115","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-05"},{"start":"2020-01-01","end":"2020-06-30","val":196000,"accn":"0000874015-21-000144","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-04"},{"start":"2020-01-01","end":"2020-09-30","val":-3475000,"accn":"0000874015-20-000142","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"start":"2020-01-01","end":"2020-09-30","val":1649000,"accn":"0000874015-21-000166","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-03"},{"start":"2020-01-01","end":"2020-12-31","val":313271000,"accn":"0000874015-21-000056","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-24"},{"start":"2020-01-01","end":"2020-12-31","val":341728000,"accn":"0000874015-22-000079","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-25"},{"start":"2020-01-01","end":"2020-12-31","val":341728000,"accn":"0000874015-23-000105","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-22","frame":"CY2020"},{"start":"2021-01-01","end":"2021-03-31","val":0,"accn":"0000874015-21-000074","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-05","frame":"CY2021Q1"},{"start":"2021-01-01","end":"2021-06-30","val":0,"accn":"0000874015-21-000144","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-04"},{"start":"2021-01-01","end":"2021-09-30","val":0,"accn":"0000874015-21-000166","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-03"},{"start":"2021-01-01","end":"2021-12-31","val":0,"accn":"0000874015-22-000079","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-25"},{"start":"2021-01-01","end":"2021-12-31","val":0,"accn":"0000874015-23-000105","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-22"},{"start":"2021-01-01","end":"2021-12-31","val":0,"accn":"0000874015-24-000116","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-21","frame":"CY2021"},{"start":"2022-01-01","end":"2022-12-31","val":0,"accn":"0000874015-23-000105","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-22"},{"start":"2022-01-01","end":"2022-12-31","val":0,"accn":"0000874015-24-000116","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-21"},{"start":"2022-01-01","end":"2022-12-31","val":0,"accn":"0000874015-25-000089","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-19","frame":"CY2022"},{"start":"2023-01-01","end":"2023-12-31","val":0,"accn":"0000874015-24-000116","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-21"},{"start":"2023-01-01","end":"2023-12-31","val":0,"accn":"0000874015-25-000089","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-19"},{"start":"2023-01-01","end":"2023-12-31","val":0,"accn":"0000874015-26-000115","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-26","frame":"CY2023"},{"start":"2024-01-01","end":"2024-12-31","val":0,"accn":"0000874015-25-000089","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-19"},{"start":"2024-01-01","end":"2024-12-31","val":0,"accn":"0000874015-26-000115","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-26","frame":"CY2024"},{"start":"2025-01-01","end":"2025-12-31","val":0,"accn":"0000874015-26-000115","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-26","frame":"CY2025"}]}}