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Other Long-Term Assets, Net - Schedule of Other Long-term Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost $ 1,354 $ 1,199
Finite-lived intangible assets, accumulated amortization (549) (492)
Finite-lived intangible assets, net 805 707
Other Assets, Noncurrent [Abstract]    
Other, cost 163 150
Other, accumulated amortization (3) (1)
Other, net 160 149
Other long-term assets, cost 1,517 1,349
Other long-term assets, accumulated amortization (552) (493)
Other long-term assets, net 965 856
Customer contracts and relationships    
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost 1,291 1,134
Finite-lived intangible assets, accumulated amortization (519) (463)
Finite-lived intangible assets, net $ 772 671
Customer contracts and relationships | Minimum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 3 years  
Customer contracts and relationships | Maximum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 29 years  
Property tax abatement    
Finite-Lived Intangible Assets    
Estimated Useful Lives 13 years  
Finite-lived intangible assets, cost $ 23 23
Finite-lived intangible assets, accumulated amortization (20) (18)
Finite-lived intangible assets, net 3 5
Other agreements    
Finite-Lived Intangible Assets    
Finite-lived intangible assets, cost 40 42
Finite-lived intangible assets, accumulated amortization (10) (11)
Finite-lived intangible assets, net $ 30 $ 31
Other agreements | Minimum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 1 year  
Other agreements | Maximum    
Finite-Lived Intangible Assets    
Estimated Useful Lives 70 years