Revenue Recognition (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Gift card breakage revenue recognition period	8 months
Unredeemed Gift Card Sales Percentage	4.00%
Earned points expiration period for inactivity	6 months
Gift Card [Member]
Liability included in unearned revenue	$ 52,008		$ 70,474
Chipotle Rewards [Member]
Liability included in unearned revenue	$ 9,801	$ 8,577	$ 0	$ 0	$ 0	$ 0
Minimum [Member]
Earned rewards, expiration period	1 month
Maximum [Member]
Earned rewards, expiration period	2 months