| Standard label: | Purchase and Supply Commitment, Excluding Long-term Commitment [Text Block] |
| Name: | us-gaap:SignificantPurchaseAndSupplyCommitmentExcludingLongtermCommitmentTextBlock |
| Documentation: | The entire disclosure for arrangements in which the entity has agreed to expend funds to procure goods or service from one or more suppliers, or to commit resources to supply goods or services to one or more customers. May include identification of the goods or services to be purchased, the goods or services to be furnished, identity of the buyer or seller, pricing, effects on pricing (such as penalties) of failing to reach minimum quantities required to be purchased, effects on pricing (such as penalties) of failing to deliver minimum quantities required to be furnished, cancellation rights, and termination provisions. |
| Object type: | cm:Level1TextBlock |
| Data type: | Text Block (HTML) (nonnum:textBlockItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SignificantPurchaseAndSupplyCommitmentExcludingLongtermCommitmentTextBlock |
| Examples of this text block disclosure: | PurchaseAndSupplyCommitmentExcludingLongTermCommitment |
| Label | Role | Language |
| Purchase and Supply Commitment, Excluding Long-term Commitment [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 330 | http://fasb.org/us-gaap/role/ref/legacyRef | 330 |
| FASB Accounting Standards Codification 440 | http://fasb.org/us-gaap/role/ref/legacyRef | 440 |