IndexAuction Market Preferred Securities, Shares Outstanding
| Name | AuctionMarketPreferredSecuritiesSharesOutstanding |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:sharesItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
Labels
| Text | Lang | Role | Container role |
|---|---|---|---|
| Auction Market Preferred Securities, Shares Outstanding | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Auction Market Preferred Securities, Shares Outstanding, Beginning Balance | en-US | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Auction Market Preferred Securities, Shares Outstanding, Ending Balance | en-US | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |