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Cash Flow Information
12 Months Ended
Dec. 31, 2019
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)201920182017
Interest paid, net of amount capitalized$372  $436  $543  
Income taxes paid, net of refunds   
Non-cash investing activities:
Additions to fixed assets for accrued capital expenditures 20  19