CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) shares in Thousands	Jun. 30, 2025 $ / shares shares	Jun. 30, 2025 £ / shares shares	Dec. 31, 2024 $ / shares shares	Dec. 31, 2024 £ / shares shares
Deferred stock, par value (in dollars per share) \| $ / shares	$ 0.000001		$ 0.000001
Deferred stock, issued (in shares)	409,032	409,032	392,255	392,255
Deferred stock, outstanding (in shares)	409,032	409,032	392,255	392,255
Class A Ordinary Shares
Common stock, par value (in dollars/pounds per share) \| $ / shares	$ 0.0001		$ 0.0001
Common stock, issued (in shares)	432,288	432,288	445,985	445,985
Common stock, outstanding (in shares)	432,288	432,288	445,985	445,985
Class B Ordinary Shares
Common stock, par value (in dollars/pounds per share) \| $ / shares	$ 0.000001		$ 0.000001
Common stock, issued (in shares)	150,881	150,881	143,128	143,128
Common stock, outstanding (in shares)	150,881	150,881	143,128	143,128
Class R Redeemable Shares
Common stock, par value (in dollars/pounds per share) \| £ / shares		£ 1		£ 1
Common stock, issued (in shares)	50	50	50	50
Common stock, outstanding (in shares)	50	50	50	50