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Supplemental Cash Flow Information (Tables)
 12 Months Ended
Dec. 31, 2021
Supplemental Cash Flow Information [Abstract]  
Net Cash Paid For Interest and Income Taxes
Net cash paid for (received from) interest and income taxes was as follows for the years ended December 31, 2021, 2020 and 2019 (in millions):
 202120202019
Interest, Net of Capitalized Interest$185 $205 $187 
Income Taxes, Net of Refunds Received$1,114 $(206)$(292)