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Description of Business and Basis of Consolidation and Presentation (Tables)
9 Months Ended
Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Beginning and Ending Cash and Cash Equivalents and Restricted Cash
The beginning and ending cash and cash equivalents and restricted cash reported within our condensed consolidated statement of cash flows included restricted cash amounts as follows (amounts in millions):

 
At September 30,
 
2019
 
2018
Beginning restricted cash
$
4

 
$
7

Ending restricted cash
7

 
8