Label	Element	Value
Investor | Total Return Swap Contracts [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	(175.00%)
Investor | US 10 Year T-Note, 4.375%, 2034-05-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	9.10%
Investor | US 10 Year T-Note, 4.250%, 2034-11-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	9.00%
Investor | US 10 Year T-Note, 4.000%, 2034-02-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	8.80%
Investor | US 10 Year T-Note, 4.500%, 2033-11-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	8.70%
Investor | US 10 Year T-Note, 3.875%, 2034-08-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	8.70%
Investor | US 10 Year T-Note, 3.875%, 2033-08-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	7.80%
Investor | US 10 Year T-Note, 4.125%, 2032-11-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	7.40%
Investor | US 10 Year T-Note, 2.875%, 2032-05-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	7.00%
Investor | US 10 Year T-Note, 3.500%, 2033-02-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	7.00%
Investor | US 10 Year T-Note, 3.375%, 2033-05-15 [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	7.00%