Annual report pursuant to Section 13 and 15(d)

Customer Concentration

v3.22.0.1
Customer Concentration
 12 Months Ended
Dec. 31, 2021
Risks and Uncertainties [Abstract]  
Customer Concentration CUSTOMER CONCENTRATION
  
The following table shows external customers with revenues of 10% or greater of total revenues from external customers and external customers with accounts receivable, net of current expected credit losses and contract assets, net of current expected credit losses balances of 10% or greater of total accounts receivable, net of current expected credit losses from external customers and contract assets, net of current expected credit losses from external customers, respectively:
Percentage of Total Revenues from External Customers Percentage of Accounts Receivable, Net and Contract Assets, Net from External Customers
Year Ended December 31, December 31,
2021 2020 2019 2021 2020
Customer A 24% 24% 27% 28% 31%
Customer B 17% 18% 20% 17% 22%
Customer C 17% 17% 19% * *
Customer D 16% 15% 18% 14% 21%
Customer E 11% 11% * 12% *
Customer F * * * 12% *
* Less than 10%

The following table shows revenues from external customers attributable to the country in which the revenues were derived (in millions). We attribute revenues from external customers to the country in which the party to the applicable agreement has its principal place of business. Substantially all of our long-lived assets are located in the United States.
Revenues from External Customers
Year Ended December 31,
2021 2020 2019
United States $ 2,872  $ 2,285  $ 2,169 
India 1,342  970  1,113 
South Korea 1,336  924  1,071 
Ireland 1,237  842  989 
United Kingdom 966  456  184 
Other countries 208  28  — 
Total $ 7,961  $ 5,505  $ 5,526