Major maintenance provision (Tables)

12 Months Ended

Dec. 31, 2019

Major maintenance provision.

Schedule of composition and changes of major maintenance provision

	December 31,							December 31, 2019
	2018		Additions			Disbursements		Short-term		Long-term
Major maintenance of concessioned assets	Ps.	943,548	Ps.	315,481	(1)	Ps.	(305,133)	Ps.	151,554	Ps.	802,342

	December 31,							December 31, 2018
	2017		Additions			Disbursements		Short-term		Long-term
Major maintenance of concessioned assets	Ps.	857,624	Ps.	225,244	(1)	Ps.	(139,320)	Ps.	224,982	Ps.	718,566

	December 31,							December 31, 2017
	2016		Additions			Disbursements		Short-term		Long-term
Major maintenance of concessioned assets	Ps.	669,653	Ps.	285,755	(1)	Ps.	(97,784)	Ps.	232,645	Ps.	624,979

Includes Ps. (23,157), Ps.23,392 and Ps.5,477, recognized as interest income in the consolidated statement of income and other comprehensive income, for the unwinding effect of the present value calculation as of December 31, 2019, 2018 and 2017, respectively.