Condensed Consolidated Balance Sheets Components - Prepaid Expenses and Other Current Assets (Q2) (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 114,367	$ 67,393	$ 54,338
Strategic agreement contra-revenue asset	41,136	0
Other current assets	143,726	33,853
Prepaid expenses and other current assets	$ 299,229	$ 101,246	$ 76,526

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of current assets classified as other.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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