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Summary of significant accounting policies - Flight equipment (Details)	12 Months Ended
	Dec. 31, 2021
Passenger aircraft
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, years	25 years
Percentage of estimates for residual values of original manufacture cost	15.00%
Freighter aircraft
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, years	35 years
Percentage of estimates for residual values of original manufacture cost	15.00%
Helicopters
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, years	30 years
Percentage of estimates for residual values of original manufacture cost	20.00%
Engines
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, years	20 years
Percentage of estimates for residual values of original manufacture cost	60.00%

X

- Definition

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.

+ References

No definition available.

+ Details

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X

- Definition

Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost.

+ References

No definition available.

+ Details

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X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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