Leases - Weighted average lease term and discount rate (Details) |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Leases | |||
| Weighted-average remaining lease term - finance leases (years) | 27 years 8 months 12 days | 28 years 3 months 18 days | 29 years 8 months 12 days |
| Weighted-average remaining lease term - operating leases (years) | 8 years 4 months 24 days | 9 years 2 months 12 days | 9 years 2 months 12 days |
| Weighted-average discount rate - finance leases | 4.70% | 4.60% | 4.60% |
| Weighted-average discount rate - operating leases | 5.20% | 5.20% | 5.20% |
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- Definition Weighted average discount rate for finance lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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