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Risks Arising from Financial Instruments - Summary of Estimated Impact on Changes in the Price of Commodities (Detail) - Commodity price risk [member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Aluminum swap [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 23.09% | 14.96%
Pre-tax impact on equity Price Increases | $ 287 | $ 177
Prices decrease | $ (287) | $ (177)
Exchange traded sugar futures [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 26.39% | 31.48%
Pre-tax impact on equity Price Increases | $ 22 | $ 23
Prices decrease | $ (22) | $ (23)
Exchange traded wheat futures [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 29.24% | 25.30%
Pre-tax impact on equity Price Increases | $ 38 | $ 21
Prices decrease | $ (38) | $ (21)
Natural gas and energy derivatives [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 25.88% | 47.08%
Pre-tax impact on equity Price Increases | $ 91 | $ 95
Prices decrease | $ (91) | $ (95)
Rice swaps [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 15.96% | 46.17%
Pre-tax impact on equity Price Increases | $ 14 | $ 35
Prices decrease | $ (14) | $ (35)
Corn swaps [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 23.26% | 32.84%
Pre-tax impact on equity Price Increases | $ 68 | $ 52
Prices decrease | $ (68) | $ (52)
Plastic derivatives [member] |  |
Disclosure of sensitivity analysis for each type of commodity price risk [line items] |  |
Volatility of prices | 28.68% | 26.74%
Pre-tax impact on equity Price Increases | $ 27 | $ 13
Prices decrease | $ (27) | $ (13)

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