Index| Name | StatementScenarioAxis |
|---|---|
| Namespace | http://fasb.org/srt/2020-01-31 |
| Prefix | srt |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrldt:dimensionItem |
| Balance | None |
| Nillable | True |
| Abstract | True |
Related Child Concepts
| Name | Relation Type | Role | |
|---|---|---|---|
 | us-gaap:MultiemployerPlansMinimumContribution | dep-concept-deprecatedConcept | http://fasb.org/us-gaap/role/deprecated/deprecated |