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Post-Employment and Other Non-current Employee Benefits - Summary of Assumptions, Amounts of Benefits Expected to be Paid (Detail) $ in Millions	Dec. 31, 2017 MXN ($)
Pension and retirement plans [member]
Disclosure of defined benefit plans [line items]
2018	$ 324
2019	160
2020	243
2021	169
2022	170
2023 to 2027	1,639
Seniority premiums [member]
Disclosure of defined benefit plans [line items]
2018	22
2019	21
2020	21
2021	21
2022	23
2023 to 2027	$ 139

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- 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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- Definition

Defined benefit plan expected future benefit payments in year five.

+ References

No definition available.

+ Details

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- Definition

Defined benefit plan expected future benefit payments year four.

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No definition available.

+ Details

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- Definition

Defined benefit plan expected future benefit payments year three.

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No definition available.

+ Details

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- Definition

Defined benefit plan expected future benefit payments year two.

+ References

No definition available.

+ Details

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- Definition

Defined benefit plan expected future benefit Payments five fiscal years thereafter.

+ References

No definition available.

+ Details

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- Definition

Defined benefit plan expected future benefit payments next twelve months.

+ References

No definition available.

+ Details

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- Details

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- Details

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