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Supplemental Cash Flow Information
12 Months Ended
Dec. 31, 2020
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
Year Ended December 31,
202020192018
(In $ millions)
Interest paid, net of amounts capitalized120 118 133 
Taxes paid, net of refunds167 157 100 
Noncash Investing and Financing Activities   
Accrued treasury stock repurchases— 13 
Finance lease obligations (Note 18)
78 — — 
Accrued capital expenditures(16)20 (4)
Asset retirement obligations(7)