v3.25.2
Overview and Summary of Significant Accounting Policies - Property and Equipment, Net (FY) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment, Net [Abstract]              
Reduction of property, plant and equipment $ 18,585,117   $ 18,585,117   $ 12,880,005 $ 3,600,786  
Capitalized software development costs 17,000 $ 6,000 43,000 $ 12,000 $ 27,000 12,000 $ 1,000
Computer Equipment              
Property, Plant and Equipment, Net [Abstract]              
Reduction of property, plant and equipment           $ 20,000  
Estimate price per share (in dollars per share)           $ 0.1  
Computer Equipment | Minimum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life           5 years  
Computer Equipment | Maximum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life           6 years  
Technology Equipment              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         6 years    
Reduction of property, plant and equipment 13,170,295   13,170,295   $ 9,146,575 $ 1,298,127  
Software              
Property, Plant and Equipment, Net [Abstract]              
Reduction of property, plant and equipment 459,742   459,742   $ 139,508 14,937  
Software | Minimum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         3 years    
Software | Maximum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         6 years    
Data Center Equipment | Minimum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         8 years    
Data Center Equipment | Maximum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         12 years    
Furniture, Fixtures, and Other Assets              
Property, Plant and Equipment, Net [Abstract]              
Reduction of property, plant and equipment $ 12,949   $ 12,949   $ 8,684 $ 1,717  
Furniture, Fixtures, and Other Assets | Minimum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         3 years    
Furniture, Fixtures, and Other Assets | Maximum              
Property, Plant and Equipment, Net [Abstract]              
Estimated useful life         5 years