Impact of COVID-19 - Capacity Reductions Narrative (Details)	1 Months Ended
	Sep. 30, 2020	Aug. 31, 2020	Jul. 31, 2020	Jun. 30, 2020	May 31, 2020	Apr. 30, 2020
Unusual or Infrequent Item, or Both [Line Items]
Initial capacity reduction from original plan due to COVID-19				95.00%
Capacity reduction in current year compared to prior year				79.00%	93.90%	76.20%
Forecast
Unusual or Infrequent Item, or Both [Line Items]
Capacity reduction in current year compared to prior year	45.00%	35.00%	18.00%