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Financial Instruments - Additional Information - Short-Term and Long-Term Debt (Detail) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jul. 19, 2017
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Issuance of outstanding notes payables | $ 66 | $ 71 |  |  |
Total debt | $ 9,339 | $ 9,365 | $ 9,311 | $ 9,873 |
Share in borrowings, percentage | 93.00% | 84.00% |  |  |
Long term borrowings | $ 9,160 | $ 9,303 |  |  |
Premiums, fees and issuance costs paid | 98 | 63 | 51 |  |
Issuance costs of new debt | 38 | 24 |  |  |
Proportional fees and issuance costs related to the extinguished debt instruments | 60 | 39 | 51 |  |
Addtion to Extinguished Debt Instruments | $ 19 | $ 1 | $ 4 |  |
Other countries [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Share in borrowings, percentage | 7.00% | 5.00% |  |  |
Finance subsidiaries [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Share in borrowings, percentage | 11.00% |  |  |  |
2017 Credit Agreement [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Bank indebtedness | $ 2,420 | $ 2,897 |  |  | $ 4,050
2017 Credit Agreement [member] | Revolving Credit Facility [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Debt instruments held | 1,121 | 1,135 |  |  |
Notes payable [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Long term borrowings | $ 6,511 | $ 6,203 |  |  |

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