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Bank Loans and Notes Payable - Summary of Financial Instruments by Type of Interest Rate (Parenthetical) (Detail) - U.S. dollars to Mexican pesos [member] $ in Millions | 12 Months Ended
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Dec. 31, 2019 MXN ($)
Cross-currency swaps [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Notional amount | $ 8,869
Cross-currency swaps [member] | 9.4% variable to 4.4% fixed interest rate [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Interest rate percentage | 4.4
Cross-currency swaps [member] | 9.4% fixed to 4.4% variable interest rate [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Interest rate percentage | 9.4
Cross-currency swaps [member] | 8.8% variable to 4.0% fixed interest rate [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Interest rate percentage | 4.0
Cross-currency swaps [member] | 8.8% fixed to 4.0% variable interest rate [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Interest rate percentage | 8.8
Interest rate swap [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Notional amount | $ 11,403
Interest rate swap [member] | Fixed rate debt [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Interest rate percentage | 7.2
Interest rate swap [member] | Variable rate debt [member] |
Disclosure of financial instruments by type of interest rate [line items] |
Interest rate percentage | 8.8

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