v3.22.0.1
Property and Equipment - Asset Retirement Obligation (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligations, beginning of year $ 1,817,000,000 $ 659,000,000  
Fair value of liabilities acquired through Merger 0 1,110,000,000  
Liabilities incurred 54,000,000 16,000,000  
Liabilities settled (173,000,000) (40,000,000)  
Accretion expense 62,000,000 55,000,000  
Changes in estimated cash flows 139,000,000 17,000,000  
Asset retirement obligations, end of period 1,899,000,000 1,817,000,000 $ 659,000,000
Classified on the consolidated balance sheets 1,899,000,000 1,817,000,000 659,000,000
Asset retirement costs capitalized, net 613,000,000 912,000,000  
Non-cash impairment related to capitalized software development costs 0 200,000,000 $ 0
Other current liabilities      
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligations, beginning of year 14,000,000    
Asset retirement obligations, end of period 216,000,000 14,000,000  
Classified on the consolidated balance sheets 216,000,000 14,000,000  
Other long-term liabilities      
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligations, beginning of year 1,803,000,000    
Asset retirement obligations, end of period 1,683,000,000 1,803,000,000  
Classified on the consolidated balance sheets $ 1,683,000,000 $ 1,803,000,000