The Initial Distribution from the Grayscale Bitcoin Trust (BTC) - Additional Information (Details)					2 Months Ended
		Jul. 31, 2024 USD ($) Bitcoin $ / shares shares	Jul. 30, 2024 $ / shares	Jul. 19, 2024	Sep. 30, 2024 $ / shares shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Amount of bitcoin distributed by the trust | Bitcoin		26,935.83753443
Exchange for stock issuance	[1],[2]				303,690,100
Exchange price per share | $ / shares			$ 5.78		$ 5.63	[3]
BTC Trust [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Initial distrubition, description					On July 19, 2024, the Sponsor of the Trust issued a press release announcing that its board of directors declared a pro rata distribution on the Shares of the Trust, pursuant to which each holder of Grayscale Bitcoin Trust (BTC) (“GBTC”) shares as of 4:00 PM ET on July 30, 2024 (the “Record Date,” and such holders, the “GBTC Record Holders”) was entitled to receive Shares of the Trust, in connection with its previously announced initial creation and distribution of Shares of the Trust (such transactions collectively, the “Initial Distribution”), as described in a definitive information statement on Schedule 14C filed with the Securities and Exchange Commission on July 30, 2024 by GBTC.
Percentage of bitcoin distributed by the trust		10.00%	10.00%
Previously announced shares distributed		303,690,100
Amount of bitcoin distributed by the trust | Bitcoin		26,935.83753443
Value of bitcoin distributed by the trust | $		$ 1,756,821,047
Initial distribution ratio			1
Exchange for stock issuance		303,690,100
Exchange price per share | $ / shares		$ 5.78
BTC Trust [Member] | Dividend Distribution [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared date				Jul. 19, 2024
Record date			Jul. 30, 2024

[1] No comparative financial statements have been provided as the Trust’s operations commenced on July 31, 2024. Prior to the commencement of operations on July 31, 2024, the Sponsor redeemed the initial seed capital of 10,000 shares for $100,000.

[2] Represents the impact of the Initial Distribution of 26,935.83753443 Bitcoin, with a value of approximately $1,756.8 million from Grayscale Bitcoin Trust (BTC), completed on July 31, 2024, as discussed in Note 4.

[3] No comparative financial statements have been provided as the Trust’s operations commenced on July 31, 2024. Prior to the commencement of operations on July 31, 2024, the Sponsor redeemed the initial seed capital of 10,000 shares for $100,000.