| Name | RefundReceivedRelatedToRevenueFromDifferentYearYearRevenueRecognized |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Refund Received Related to Revenue from Different Year, Year Revenue Recognized | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Discloses year revenue was initially recognized related to refunds that are recognized in a period other than the period in which the related revenue was recognized and that have a material effect on net income. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 980 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 605 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 50 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 1 | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=109242873&loc=d3e50972-110412 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:IncomeStatementRelatedDisclosuresAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations |