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Revenues (Tables)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Revenue from Contract with Customer [Abstract]    
Schedule of Disaggregation of Revenue   The following tables disaggregate our product and service revenues by major product line and geographic region for the three and six months ended June 30, 2021 and 2020 and includes equipment revenues recognized under lease accounting standards of $35 million and $63 million in the three and six months ended June 30, 2021, respectively, and $32 million and $89 million for the three and six months ended June 30, 2020, respectively.
Three Months Ended June 30,Six Months Ended June 30,
(Dollars in millions)2021202020212020
Product Line Revenue for Western Hemisphere
  Completion and Production$231 $165 $456 $462 
  Drilling, Evaluation and Intervention194 145 359 436 
Total Western Hemisphere Revenue425 310 $815 $898 
Product Line Revenue for Eastern Hemisphere
  Completion and Production214 240 $412 $542 
  Drilling, Evaluation and Intervention264 271 508 596 
Total Eastern Hemisphere Revenue478 511 $920 $1,138 
Total Revenues$903 $821 $1,735 $2,036 

Three Months Ended June 30,Six Months Ended June 30,
(Dollars in millions)2021202020212020
Revenue by Geographic Areas:
  North America$220 $172 $434 $513 
  Latin America205 138 381 385 
 Western Hemisphere 425 310 $815 $898 
  Middle East & North Africa and Asia289 341 $556 $744 
  Europe/Sub-Sahara Africa/Russia189 170 364 394 
 Eastern Hemisphere 478 511 $920 $1,138 
Total Revenues$903 $821 $1,735 $2,036 
Schedule of Contract with Customer, Asset and Liability
(Dollars in millions)
6/30/2021
12/31/2020
Receivables for Product and Services in Accounts Receivable, Net$744 $792 
Total Accounts Receivables$782 $826 
Contract Liabilities$36 $37 
  
Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction  
In the following table, estimated revenue for contracts with original performance obligations greater than twelve months are expected to be recognized in the future related to performance obligations that are either unsatisfied or partially unsatisfied as of June 30, 2021.
(Dollars in millions)2021202220232024ThereafterTotal
Service Revenue$27 $42 $39 $40 $54 $202