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Segment Information - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
segment
Dec. 31, 2018
USD ($)
Dec. 31, 2017
Concentration Risk [Line Items]      
Number of operating segments | segment 2    
Long-lived assets $ 1,094 $ 1,089  
Customer Concentration Risk | Sales Revenue      
Concentration Risk [Line Items]      
Concentration risk, percentage 10.00%    
Customer A | Customer Concentration Risk | Sales Revenue      
Concentration Risk [Line Items]      
Concentration risk, percentage 23.00% 21.00% 21.00%
Customer B | Customer Concentration Risk | Sales Revenue      
Concentration Risk [Line Items]      
Concentration risk, percentage 16.00% 17.00% 17.00%
Customer C | Customer Concentration Risk | Sales Revenue      
Concentration Risk [Line Items]      
Concentration risk, percentage 11.00% 11.00% 12.00%
Customer D | Customer Concentration Risk | Sales Revenue      
Concentration Risk [Line Items]      
Concentration risk, percentage 10.00%   12.00%
U.S.      
Concentration Risk [Line Items]      
Long-lived assets $ 383 $ 315  
Intangible assets and goodwill $ 115 $ 117