Label	Element	Value
Investor | iShares iBoxx High Yield Corporate Bond ETF [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	33.40%
Investor | SPDR Bloomberg High Yield Bond ETF [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	33.30%
Investor | PIMCO 0-5 Year High Yield Corporate Bond Index ETF [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	33.30%
Investor | Investment Companies [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	80.00%
Investor | Total Return Swap Contracts [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	40.00%