XML 39 R28.htm IDEA: XBRL DOCUMENT
v3.19.2

Significant Accounting Policies, Cost of Products Sold (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019
Cost of Products Sold [Abstract] |  |
Previously expensed costs to produce TEGSEDI related to TEGSEDI commercial revenue | $ 0.2 | $ 0.3

X
- Definition The costs related to goods produced and sold that were previously recognized as expense and are related to the commercial revenue recognized during the period. + References No definition available. + Details
Name: | ions_CostOfProductsSoldPreviouslyRecognized
Namespace Prefix: | ions_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CostOfGoodsAndServicesSoldAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration