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Supplemental Cash Flow Information (Tables)
9 Months Ended
Sep. 30, 2021
Supplemental Cash Flow Information [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures
The following table provides supplemental disclosure of cash flow information (in millions): 
Nine Months Ended September 30,
20212020
Cash paid during the period for interest on debt, net of amounts capitalized$902 $977 
Cash paid for income taxes, net of refunds
Non-cash investing and financing activities:
Property, plant and equipment, net of accumulated depreciation funded with accounts payable and accrued liabilities234 262 
Accrued and declared dividends on common stock85 —