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Cash Flow Information
12 Months Ended
Dec. 31, 2020
Supplemental Cash Flow Information [Abstract]  
Cash Flow Information Cash Flow Information
Detail of supplemental disclosures of cash flow and non-cash investing and financing information was:
 Year Ended December 31,
 (In millions)202020192018
Interest paid, net of amount capitalized$340 $372 $436 
Income taxes paid, net of refunds24 
Non-cash investing activities:
(Decreases)/additions to fixed assets for accrued capital expenditures(6)20