| Standard label: | Inventory, LIFO Reserve, Period Charge |
| Name: | us-gaap:InventoryLIFOReservePeriodCharge |
| Documentation: | The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period. |
| 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:InventoryLIFOReservePeriodCharge |
| Label | Role | Language |
| Inventory, LIFO Reserve, Period Charge | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.6a) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.6b) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.6c) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 330 10 S99 1 (SAB Topic 5.L) | http://fasb.org/us-gaap/role/ref/legacyRef | 330 |
| Part Of Roll Up: |
| us-gaap:InventoryLIFOReserveEffectOnIncomeNet |