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Loss on impairment of equity method investments (Tables)
6 Months Ended
Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]  
Loss on impairments of equity method investments
(In $ millions)Six months ended June 30, 2021Six months ended June 30, 2020
Seadrill Partners - Direct ownership interests(47)
Total loss on impairment of equity method investments (47)