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Other financial assets - Summary of other financial assets including non-quasi equity loans to equity accounted units (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Other Assets [Abstract]    
Non-current derivative financial instruments $ 210 $ 531
Non-current equity shares and quoted funds 98 66
Other non-current investments, including loans 220 231
Other financial assets, non-current 528 829
Current derivative financial instruments 62 134
Current equity shares and quoted funds 19 9
Other current investments, including loans 2,462 2,668
Current loans to equity accounted units 0 40
Other financial assets, current 2,543 2,851
Derivative financial instruments 272 665
Equity shares and quoted funds 117 75
Other investments, including loans 2,682 2,899
Loans to equity accounted units 0 41
Other financial assets 3,071 3,680
Highly liquid financial assets held in managed investment funds classified as held for trading $ 2,401 $ 2,538