v3.26.1
Subsequent events (Details) - Subsequent Event
$ in Millions
May 08, 2026
USD ($)
token
$ / Unit
Circle Internet Group Inc | IDG Capital  
Subsequent Event [Line Items]  
Equity method investment, ownership percentage 5.00%
ARC Tkens  
Subsequent Event [Line Items]  
Crypto Asset, number of tokens authorized for issuance | token 740,000,000
Token price (per share) | $ / Unit 0.30
Crypto asset, fully diluted network valuation amount $ 3,000.0
Proceeds from issuance of tokens $ 25.0
Number of crypto token units sold | token 83,300,000
ARC Tkens | Scenario, Plan  
Subsequent Event [Line Items]  
Proceeds from issuance of tokens $ 222.0