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Employee Benefits - Expected Future Benefit Payments (Detail) $ in Millions	Dec. 31, 2020 MXN ($)
Disclosure of defined benefit plans [line items]
2021	$ 926
2022	531
2023	581
2024	599
2025	705
2026 to 2030	4,108
Pension and retirement plans [member]
Disclosure of defined benefit plans [line items]
2021	702
2022	335
2023	384
2024	398
2025	496
2026 to 2030	3,118
Seniority premiums [member]
Disclosure of defined benefit plans [line items]
2021	198
2022	168
2023	168
2024	170
2025	176
2026 to 2030	791
Post retirement medical services [member]
Disclosure of defined benefit plans [line items]
2021	26
2022	28
2023	29
2024	31
2025	33
2026 to 2030	$ 199

X

- Definition

Defined benefit plan expected future benefit payments in year five.

+ References

No definition available.

+ Details

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X

- Definition

Defined benefit plan expected future benefit payments year four.

+ References

No definition available.

+ Details

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X

- Definition

Defined benefit plan expected future benefit payments year six to ten.

+ References

No definition available.

+ Details

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X

- Definition

Defined benefit plan expected future benefit payments year three.

+ References

No definition available.

+ Details

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X

- Definition

Defined benefit plan expected future benefit payments year two.

+ References

No definition available.

+ Details

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X

- Definition

Defined benefit plan expected future benefit payments next twelve months.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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