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Other Long-Term Assets, Net - Schedule of Other Long-term Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost $ 1,199 $ 1,209
Finite-lived intangible assets, accumulated amortization (492) (437)
Finite-lived intangible assets, net 707 772
Other Long-Term Assets, Net    
Other, cost 152 144
Other, accumulated amortization (1)  
Other, net 151 144
Other long-term assets, cost 1,351 1,353
Other long-term assets, accumulated amortization (493) (437)
Other long-term assets, net 858 916
Customer contracts and relationships    
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost 1,134 1,152
Finite-lived intangible assets, accumulated amortization (463) (413)
Finite-lived intangible assets, net $ 671 739
Customer contracts and relationships | Minimum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 1 year  
Customer contracts and relationships | Maximum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 20 years  
Property tax abatement    
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost $ 23 23
Finite-lived intangible assets, accumulated amortization (18) (16)
Finite-lived intangible assets, net $ 5 7
Property tax abatement | Minimum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 7 years  
Property tax abatement | Maximum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 13 years  
Other agreements    
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost $ 42 34
Finite-lived intangible assets, accumulated amortization (11) (8)
Finite-lived intangible assets, net $ 31 $ 26
Other agreements | Minimum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 25 years  
Other agreements | Maximum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 70 years