3.26.1 html 70 30 1 false 9 0 false 1 false false R1.htm 75000 - Document - Document and Entity Information Sheet http://www.outsetmedical.com/20260424/taxonomy/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 2 false false R3.htm 995443 - Disclosure - Award Timing Disclosure Sheet http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure Award Timing Disclosure Notes 3 false false R4.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 4 false false All Reports Book All Reports om-20260424.htm om-20260424.xsd img137849034_0.gif img137849034_1.jpg img137849034_10.jpg img137849034_11.jpg img137849034_12.jpg img137849034_13.gif img137849034_14.jpg img137849034_15.gif img137849034_16.jpg img137849034_17.gif img137849034_18.jpg img137849034_19.gif img137849034_2.gif img137849034_20.jpg img137849034_21.gif img137849034_22.jpg img137849034_23.gif img137849034_24.jpg img137849034_25.gif img137849034_26.jpg img137849034_27.gif img137849034_28.gif img137849034_29.jpg img137849034_3.gif img137849034_30.gif img137849034_31.jpg img137849034_32.gif img137849034_33.jpg img137849034_34.gif img137849034_35.jpg img137849034_36.gif img137849034_37.jpg img137849034_38.jpg img137849034_39.jpg img137849034_4.gif img137849034_40.jpg img137849034_41.jpg img137849034_42.jpg img137849034_43.jpg img137849034_44.jpg img137849034_45.jpg img137849034_46.jpg img137849034_47.jpg img137849034_48.jpg img137849034_5.gif img137849034_6.jpg img137849034_7.jpg img137849034_8.jpg img137849034_9.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 false false