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Receivables (Tables)
6 Months Ended
Jun. 30, 2022
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Receivables consisted of the following (dollar amounts in millions):
June 30, 2022December 31, 2021
Trade receivables$199 $156 
Income tax receivable
Other receivables18 13 
Allowance for doubtful accounts(1)(1)
Total$219 $169