- DefinitionFair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
 -Topic 820
 -SubTopic 10
 -Name Accounting Standards Codification
 -Section 50
 -Paragraph 2E
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E
Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
 -Topic 820
 -SubTopic 10
 -Name Accounting Standards Codification
 -Section 50
 -Paragraph 2
 -Subparagraph (b)
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2
Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
 -Topic 820
 -SubTopic 10
 -Name Accounting Standards Codification
 -Section 50
 -Paragraph 2
 -Subparagraph (a)
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2
| Name: | us-gaap_InvestmentsFairValueDisclosure | 
| Namespace Prefix: | us-gaap_ | 
| Data Type: | xbrli:monetaryItemType | 
| Balance Type: | debit | 
| Period Type: | instant |