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Financial Instruments - Forward Agreements to Purchase Foreign Currency (Details) - Forward agreements to purchase foreign currency - MXN ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Less than one year |  |
Disclosure of Financial Assets and Financial Liabilities [Line Items] |  |
Notional amount | $ 6,384 | $ 9,042
Fair value Liability | (104) | (1,040)
Fair Value Asset | 78 | 4
1-2 years |  |
Disclosure of Financial Assets and Financial Liabilities [Line Items] |  |
Notional amount | 23 | 66
Fair value Liability | (2) | (41)
2-3 years |  |
Disclosure of Financial Assets and Financial Liabilities [Line Items] |  |
Notional amount | $ 2 | 23
Fair value Liability |  | (2)
3-4 years |  |
Disclosure of Financial Assets and Financial Liabilities [Line Items] |  |
Notional amount |  | $ 2

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