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Loans and Borrowings - Summary of Reconciliation of Movements of Liabilities to Cash Flows from Financing Activities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Balance at January 1 $ 14,868 $ 12,153
Changes from financing cash flows    
Proceeds from issuance of CRPS 463 1,389
Proceeds from bank loans 1,980 8
Payment of bank loans (176) (106)
Payment of lease liabilities (24) (30)
Interest paid (108) (17)
Total changes from financing cash flows 2,135 1,244
Effect of changes in foreign exchange rates (5) (2)
Other changes    
Issuance of CRPS   4
Recognition of lease liabilities 106 24
Derecognition of lease liabilities [1] (5)
Secured bank loans for asset acquisition 20 17
Interest expense 1,701 1,433
CRPS converted to GHL ordinary shares (16,650)  
Total liability-related other changes (14,823) 1,473
Balance at December 31 2,175 14,868
Convertible redeemable preference shares    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Balance at January 1 10,767 8,256
Changes from financing cash flows    
Proceeds from issuance of CRPS 436 1,091
Proceeds from bank loans 0 0
Payment of bank loans 0 0
Payment of lease liabilities 0 0
Interest paid 0 0
Total changes from financing cash flows 436 1,091
Effect of changes in foreign exchange rates 0 0
Other changes    
Issuance of CRPS   4
Recognition of lease liabilities 0 0
Derecognition of lease liabilities 0 0
Secured bank loans for asset acquisition 0 0
Interest expense 1,570 1,416
CRPS converted to GHL ordinary shares (12,773)  
Total liability-related other changes (11,203) 1,420
Balance at December 31 0 10,767
Bank loans    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Balance at January 1 212 296
Changes from financing cash flows    
Proceeds from issuance of CRPS 0 0
Proceeds from bank loans 60 8
Payment of bank loans (151) (106)
Payment of lease liabilities 0 0
Interest paid (23) (14)
Total changes from financing cash flows (114) (112)
Effect of changes in foreign exchange rates (3) (3)
Other changes    
Issuance of CRPS   0
Recognition of lease liabilities 0 0
Derecognition of lease liabilities 0 0
Secured bank loans for asset acquisition 20 17
Interest expense 23 14
CRPS converted to GHL ordinary shares 0  
Total liability-related other changes 43 31
Balance at December 31 138 212
Term Loan    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Balance at January 1 0 0
Changes from financing cash flows    
Proceeds from issuance of CRPS 0 0
Proceeds from bank loans 1,920 0
Payment of bank loans (25) 0
Payment of lease liabilities 0 0
Interest paid (83) 0
Total changes from financing cash flows 1,812 0
Effect of changes in foreign exchange rates (1) 0
Other changes    
Issuance of CRPS   0
Recognition of lease liabilities 0 0
Derecognition of lease liabilities 0 0
Secured bank loans for asset acquisition 0 0
Interest expense 103 0
CRPS converted to GHL ordinary shares 0  
Total liability-related other changes 103 0
Balance at December 31 1,914 0
Lease liabilities    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Balance at January 1 39 49
Changes from financing cash flows    
Proceeds from issuance of CRPS 0 0
Proceeds from bank loans 0 0
Payment of bank loans 0 0
Payment of lease liabilities (24) (30)
Interest paid (2) (3)
Total changes from financing cash flows (26) (33)
Effect of changes in foreign exchange rates (1) 1
Other changes    
Issuance of CRPS   0
Recognition of lease liabilities 106 24
Derecognition of lease liabilities [1] (5)
Secured bank loans for asset acquisition 0 0
Interest expense 5 3
CRPS converted to GHL ordinary shares 0  
Total liability-related other changes 111 22
Balance at December 31 123 39
Equity component of convertible redeemable preference shares    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Balance at January 1 3,850 3,552
Changes from financing cash flows    
Proceeds from issuance of CRPS 27 298
Proceeds from bank loans 0 0
Payment of bank loans 0 0
Payment of lease liabilities 0 0
Interest paid 0 0
Total changes from financing cash flows 27 298
Effect of changes in foreign exchange rates 0 0
Other changes    
Issuance of CRPS   0
Recognition of lease liabilities 0 0
Derecognition of lease liabilities 0 0
Secured bank loans for asset acquisition 0 0
Interest expense 0 0
CRPS converted to GHL ordinary shares (3,877)  
Total liability-related other changes (3,877) 0
Balance at December 31 $ 0 $ 3,850
[1] Amount less than $1 million