Label	Element	Value
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Tesla, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	8.60%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Ouster, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	5.70%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Alphabet, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	5.60%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Uber Technologies, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	5.40%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Baidu, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	5.20%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| WeRide, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	4.60%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Aeva Technologies, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	4.50%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Mobileye Global, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	4.40%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Hesai Group [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	4.30%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Aurora Innovation, Inc. [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	4.20%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Common Stocks [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	98.90%
Roundhill Robotaxi, Autonomous Vehicles & Technology ETF \| Money Market Funds [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Total Investments	oef_PctOfTotalInv	1.10%