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Trade Receivable, Net - Aging Analysis of Accounts Receivable (Detail) - MXN ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | $ 13,014 | $ 11,523
0 days |  |
Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | 11,689 | 9,905
1-30 days |  |
Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | 686 | 769
31-60 days |  |
Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | 112 | 298
61-90 days |  |
Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | 45 | 65
91-120 days |  |
Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | 91 | 44
121 + days |  |
Disclosure of Aging Analysis of Accounts Receivable [Line Items] |  |
Trade receivables past due but not impaired | $ 391 | $ 442

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