| Standard label: | Quarterly Financial Information, Quarterly Charges and Credits, Amount Affecting Comparability |
| Name: | us-gaap:QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability |
| Documentation: | Amount of the item included in the interim period that affected period-to-period comparability (excluding restatement adjustments). |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability |
| Label | Role | Language |
| Quarterly Financial Information, Quarterly Charges and Credits, Amount Affecting Comparability | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 270 10 50 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 270 |