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Financial Instruments - Detailed Information about In Lease Liabilities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Text block [abstract]      
Lease financial liability at beginning of year $ 1,260 $ 1,306 $ 1,315
Additions From New Leases 227 213 274
Increase Decrease Reductions Of Leases Financial Liabilities From Payments (313) (276) (239)
Increase Decrease Cancellation And Remeasurements Of Lease Financial Liabilities 27 (9) (54)
Increase Decrease Through Foreign Exchange Difference Lease Financial Liabilities (25) 26 10
Lease financial liability at end of year $ 1,176 $ 1,260 $ 1,306