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Intangible assets and goodwill - Summary Of Reconciliation Of Carrying Amount (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance $ 913 $ 1,180  
Amortization for the year 236 261 $ 538
Impairment loss 8 28 28
Ending balance 675 913 1,180
Gross carrying amount [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 2,457 2,436  
Additions 3 6  
Acquisitions – internally developed 9 12  
Acquisition through business combination   5  
Disposals/Write-off/Derecognition (1) (2)  
Effects of movements in exchange rates (5) [1]  
Ending balance 2,463 2,457 2,436
Accumulated Depreciation, Amortisation and Impairment [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 1,544 1,256  
Amortization for the year 236 261  
Disposals/Write-off/Derecognition (1) (2)  
Effects of movements in exchange rates 1 1  
Impairment loss 8 28  
Ending balance 1,788 1,544 1,256
Software [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 41 39  
Ending balance 26 41 39
Software [Member] | Gross carrying amount [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 84 66  
Additions 2 6  
Acquisitions – internally developed 9 12  
Acquisition through business combination   2  
Disposals/Write-off/Derecognition (1) (2)  
Effects of movements in exchange rates (5) [1]  
Ending balance 89 84 66
Software [Member] | Accumulated Depreciation, Amortisation and Impairment [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 43 27  
Amortization for the year 21 18  
Disposals/Write-off/Derecognition (1) (2)  
Effects of movements in exchange rates [1]  
Impairment loss 0 0  
Ending balance 63 43 27
Goodwill [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 656 681  
Ending balance 647 656 681
Goodwill [Member] | Gross carrying amount [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 712 709  
Additions 0 0  
Acquisitions – internally developed 0 0  
Acquisition through business combination   3  
Disposals/Write-off/Derecognition 0 0  
Effects of movements in exchange rates 0 0  
Ending balance 712 712 709
Goodwill [Member] | Accumulated Depreciation, Amortisation and Impairment [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 56 28  
Amortization for the year 0 0  
Disposals/Write-off/Derecognition 0 0  
Effects of movements in exchange rates 1 0  
Impairment loss 8 28  
Ending balance 65 56 28
Non Compete Agreement [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 214 456  
Ending balance 0 214 456
Non Compete Agreement [Member] | Gross carrying amount [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 1,644 1,644  
Additions 0 0  
Acquisitions – internally developed 0 0  
Acquisition through business combination   0  
Disposals/Write-off/Derecognition 0 0  
Effects of movements in exchange rates 0 0  
Ending balance 1,644 1,644 1,644
Non Compete Agreement [Member] | Accumulated Depreciation, Amortisation and Impairment [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 1,430 1,188  
Amortization for the year 214 242  
Disposals/Write-off/Derecognition 0 0  
Effects of movements in exchange rates 0 0  
Impairment loss 0 0  
Ending balance 1,644 1,430 1,188
Other intangible assets [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 2 4  
Ending balance 2 2 4
Other intangible assets [Member] | Gross carrying amount [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 17 17  
Additions 1 [1]  
Acquisitions – internally developed 0 0  
Acquisition through business combination   0  
Disposals/Write-off/Derecognition 0 0  
Effects of movements in exchange rates [1]  
Ending balance 18 17 17
Other intangible assets [Member] | Accumulated Depreciation, Amortisation and Impairment [Member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Beginning balance 15 13  
Amortization for the year 1 1  
Disposals/Write-off/Derecognition 0 0  
Effects of movements in exchange rates [1] 1  
Impairment loss 0 0  
Ending balance $ 16 $ 15 $ 13
[1] Amount less than $1 million