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Cash and Cash Equivalents and Investment Securities - Summary of Cash and Cash Equivalents and Investments in Short-Term Debt Securities (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
 [1]
Dec. 31, 2018
 [1]
Disclosure of detailed information about borrowings [abstract]        
Short-term bank deposits $ 6,542 $ 3,319    
Treasury Bills 1,050 6,800    
Cash and bank accounts 4,505 5,132    
Cash and cash equivalents 12,097 15,252    
Bank overdrafts (53) (5)    
Total $ 12,043 $ 15,247 $ 7,169 $ 6,960
[1] The consolidated statement of cash flows for 2019 has been restated to include operating, investing and financing activities from discontinued operations separately in the cashflow statement. In addition, the 2019 cash flow from investing activities has been restated to reflect reclassification of the cash flow hedges in relation to the Australia divestiture reported in the financing activities in 2019 and recycled to profit or loss upon the completion of the transaction.