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Business Segments and Geographic Areas - Revenues by Country Based on Sales Destination of Products or Services (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 5,524 $ 6,090 $ 8,479
United States [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 1,760 1,634 3,112
Norway [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 365 464 512
Saudi Arabia [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 316 343 436
Brazil [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 316 224 269
China [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 222 288 285
Canada [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 207 168 247
United Kingdom [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 204 222 333
Singapore [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 143 242 473
United Arab Emirates [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 130 221 224
South Korea [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 32 33 69
Other Countries [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 1,829 $ 2,251 $ 2,519