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Operating Information by Segment and Geographic Area - External Revenue and Total Assets by Geographic Area (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue $ 3,299 $ 3,684 $ 6,422 $ 7,031
North America        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue 2,101 2,187 4,009 4,254
Asia Pacific (includes Australia)        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue 203 427 452 780
Europe        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue 595 581 1,145 1,018
Central and South America        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue 356 404 707 779
Middle East and Africa        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue $ 44 $ 85 $ 109 $ 200