| Standard label: | Recorded Unconditional Purchase Obligation |
| Name: | us-gaap:RecordedUnconditionalPurchaseObligation |
| Documentation: | Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:RecordedUnconditionalPurchaseObligation |
| Label | Role | Language |
| Recorded Unconditional Purchase Obligation | http://www.xbrl.org/2003/role/label | en-US |
| Recorded Unconditional Purchase Obligation, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 440 10 50 6 | http://fasb.org/us-gaap/role/ref/legacyRef | 440 |