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Segment Information - Narrative (Details)
$ in Millions
12 Months Ended
Jun. 02, 2018
segment
Dec. 31, 2020
USD ($)
segment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
Concentration Risk [Line Items]        
Number of operating segments | segment 2 2    
Long-lived assets   $ 1,044 $ 1,094  
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   20.00% 23.00% 21.00%
Customer B | Customer Concentration Risk | Sales Revenue        
Concentration Risk [Line Items]        
Concentration risk, percentage   12.00% 16.00% 17.00%
Customer C | Customer Concentration Risk | Sales Revenue        
Concentration Risk [Line Items]        
Concentration risk, percentage   11.00% 11.00% 11.00%
Customer D | Customer Concentration Risk | Sales Revenue        
Concentration Risk [Line Items]        
Concentration risk, percentage   11.00% 10.00%  
U.S.        
Concentration Risk [Line Items]        
Long-lived assets   $ 215 $ 383  
Intangible assets and goodwill   $ 128 $ 115