cm:Concept: us-gaap:DebtInstrumentChangeInValuationTechniqueReasonExtensibleList
| Debt Instrument, Change in Valuation Technique, Reason [Extensible List] |
| us-gaap:DebtInstrumentChangeInValuationTechniqueReasonExtensibleList |
| Indicates reason valuation technique or approach changed for measuring debt instrument, including, but not limited to, convertible and non-convertible debt. |
| cm:Concept |
| srt-types:extensibleListItemType |
| As Of (instant) |
| (no balance type) |
| false |
| us-gaap:DebtInstrumentChangeInValuationTechniqueReasonExtensibleList |