Impact of COVID-19 - Supporting Communities Narrative (Details) travelers in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) flights travelers
Unusual or Infrequent Items, or Both [Abstract]
Number of flights provided to stranded travelers due to COVID-19 (over) | flights	260
Number of stranded travelers provided flights due to COVID-19 (more than) | travelers	30
Flight vouchers pledged to minority organizations due to COVID-19 | $	$ 250