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Pensions and Post-Employment Benefits - Summary of Plan Assets Measured at Estimated Fair Value (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of fair value of plan assets [line items]      
Cash $ 24 $ 38  
Investments in corporate bonds 402 296  
Investments in government bonds 323 356  
Total fixed-income securities 749 690  
Investment in marketable securities 222 268  
Other investments and private funds 304 250  
Total variable-income securities 526 518  
Total plan assets 1,275 1,208 $ 1,784
Level 1 [Member]      
Disclosure of fair value of plan assets [line items]      
Cash 24 38  
Investments in corporate bonds 11 7  
Investments in government bonds 114 90  
Total fixed-income securities 149 135  
Investment in marketable securities 179 226  
Other investments and private funds 70 91  
Total variable-income securities 249 317  
Total plan assets 398 452  
Level 2 [Member]      
Disclosure of fair value of plan assets [line items]      
Investments in corporate bonds 391 289  
Investments in government bonds 209 266  
Total fixed-income securities 600 555  
Investment in marketable securities 43 42  
Other investments and private funds 33 42  
Total variable-income securities 76 84  
Total plan assets 676 639  
Level 3 [Member]      
Disclosure of fair value of plan assets [line items]      
Other investments and private funds 201 117  
Total variable-income securities 201 117  
Total plan assets $ 201 $ 117