| Name | ScenarioUnspecifiedDomain |
|---|---|
| Namespace | http://fasb.org/srt/2020-01-31 |
| Prefix | srt |
| Data type | nonnum:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Scenario [Domain] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
srt:StatementScenarioAxis | parent-child | http://fasb.org/us-gaap/role/statement/CommonDomainMembers | |
srt:StatementScenarioAxis | dimension-default | http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable | |
srt:StatementScenarioAxis | dimension-domain | http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable | |
srt:StatementScenarioAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits | |
srt:StatementScenarioAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfMultiemployerPlansTable | |
srt:StatementScenarioAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfMultiemployerPlansTable |