| Standard label: | Auction Market Preferred Securities, Stock Series, Par Value Per Share |
| Name: | us-gaap:AuctionMarketPreferredSecuritiesStockSeriesParValuePerShare |
| Documentation: | The par value of the auction market preferred security. |
| Object type: | cm:Concept |
| Data type: | Share (num:perShareItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:AuctionMarketPreferredSecuritiesStockSeriesParValuePerShare |
| Label | Role | Language |
| Auction Market Preferred Securities, Stock Series, Par Value Per Share | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |