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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— 4 13 
Finance lease obligations (Note 18)
78 — — 
Accrued capital expenditures(16)20 (4)
Asset retirement obligations5 6 (7)