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Fair Value of Financial Assets and Liabilities - Recurring (Details) - Significant Other Observable Inputs (Level 2) [Member] - Fair Value, Recurring [Member] - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Assets:    
Total Assets $ 1 $ 2
Liabilities:    
Total Liabilities 0 0
Foreign exchange contract - forward    
Assets:    
Foreign exchange contracts 1 2
Liabilities:    
Foreign derivative contracts $ 0 $ 0