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Trade Notes and Accounts Receivable, Net - Doubtful Accounts (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Trade Notes and Accounts Receivable, Net
Beginning Balance	$ (3,866,492)	$ (3,679,505)
Impairment provision	(2,007,316)	(2,461,596)
Write-off of receivables	1,331,319	1,440,582
Unused amounts reversed	885,410	834,027
Ending Balance	$ (3,657,079)	$ (3,866,492)

X

- Definition

The amount of impairment loss recognised in profit or loss for trade receivables. [Refer: Impairment loss recognised in profit or loss; Trade receivables]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2017-01-01
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-URIDate 2017-03-09

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X

- Definition

The amount of reversal of impairment loss recognised in profit or loss for trade receivables. [Refer: Reversal of impairment loss recognised in profit or loss; Trade receivables]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2017-01-01
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-URIDate 2017-03-09

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- References

No definition available.

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X

- Definition

For an unclassified balance sheet, a valuation allowance for receivables of trade and accounts receivable.

+ References

No definition available.

+ Details

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X

- Definition

Amount of direct write off of trade receivable.

+ References

No definition available.

+ Details

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