Leases - Weighted average lease term and discount rate (Details) |
Mar. 31, 2019 |
|---|---|
| Leases | |
| Weighted-average remaining lease term - finance leases (years) | 29 years 9 months 18 days |
| Weighted-average remaining lease term - operating leases (years) | 10 years 2 months 12 days |
| Weighted-average discount rate - finance leases | 4.70% |
| Weighted-average discount rate - operating leases | 5.20% |
| X | ||||||||||
- Definition Weighted average discount rate for finance lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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
|