| Name | AuctionMarketPreferredSecuritiesStockSeriesLineItems |
|---|---|
| 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 | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Auction Market Preferred Securities, Stock Series [Line Items] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesLiquidationValue | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesParValuePerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesRateSettingInterval1 | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesPerShareRedemptionAmount | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:MovementInAuctionMarketPreferredSecuritiesSharesOutstandingRollForward | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesSharesAuthorized | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesVariableInterestRateEarned | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesTable | all | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesLiquidationValue | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesParValuePerShare | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesRateSettingInterval1 | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesPerShareRedemptionAmount | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:MovementInAuctionMarketPreferredSecuritiesSharesOutstandingRollForward | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesSharesAuthorized | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable | |
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesVariableInterestRateEarned | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityAuctionMarketPreferredSecuritiesStockSeriesTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:AuctionMarketPreferredSecuritiesStockSeriesTable | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity |