Impact of COVID-19 - Capacity Reductions Narrative (Details)	1 Months Ended	3 Months Ended
Dec. 31, 2020	Nov. 30, 2020	May 31, 2020	Mar. 31, 2021
COVID-19 Pandemic
Unusual or Infrequent Item, or Both [Line Items]
Capacity reduction in current year compared to prior year	20.10%	20.80%	94.00%	26.90%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Balance Type:	na
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