- DefinitionAmount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef
 -Topic 350
 -SubTopic 30
 -Name Accounting Standards Codification
 -Section 45
 -Paragraph 2
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482686/350-30-45-2
Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
 -Topic 350
 -SubTopic 30
 -Name Accounting Standards Codification
 -Section 50
 -Paragraph 2
 -Subparagraph (b)
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2
Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
 -Topic 350
 -SubTopic 30
 -Name Accounting Standards Codification
 -Section 50
 -Paragraph 3
 -Subparagraph (b)
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482665/350-30-50-3
Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
 -Topic 230
 -SubTopic 10
 -Name Accounting Standards Codification
 -Section 45
 -Paragraph 28
 -Subparagraph (b)
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28
| Name: | us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill | 
| Namespace Prefix: | us-gaap_ | 
| Data Type: | xbrli:monetaryItemType | 
| Balance Type: | debit | 
| Period Type: | duration |