JOINT VENTURE - Purchase Agreements (Details) $ in Millions			3 Months Ended	9 Months Ended
	Jun. 15, 2021 item	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) item	Mar. 19, 2021 USD ($) item
JOINT VENTURE
Number of agreements | item	30,000
Amount funded on net basis				$ 47.7
Minerva Purchase Agreement
JOINT VENTURE
Number miners purchases covered by the agreement | item					30,000
Total purchase price per agreement					$ 118.5
Deposits made		$ 23.7
Amount paid				$ 16.8
Percentage reimbursed by Talen				50.00%
Reimbursement of initial deposit by Talen				$ 11.9
Reimbursement of initial deposit by Talen (as percent)				50.00%
Payment to be made six months before shipping date (as percent)				30.00%
30% payment to be made prior to shipping date				6 months
Payment to be made three months before shipping date (as percent)				30.00%
30% payment to be made prior to shipping date				3 months
Payment to be made one month before shipping date (as percent)				20.00%
20% payment to be made prior to shipping date				1 month
Number of miners covered by payment to date | item				10,000
Percentage of payment to the total amount due at the date of purchase agreement amendment				90.00%
Number of agreements | item	5,000
Bitmain Non-fixed Price Sales and Purchase Agreements
JOINT VENTURE
Amount funded on net basis				$ 124.6
Talen
JOINT VENTURE
Amount funded on net basis				$ 76.9
Talen | Bitmain Non-fixed Price Sales and Purchase Agreements
JOINT VENTURE
Percentage of payment to the total amount due at the date of purchase agreement amendment			50.00%
Number of agreements			22.8
Nautilus | Bitmain Non-fixed Price Sales and Purchase Agreements
JOINT VENTURE
Number of agreements | item	2