Number of warrants purchased.

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Percent of share approved for donation.

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Shares authorized for donation.

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Stock repurchased price per shares.

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Warrants expired.

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Warrants transaction costs.

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Exercise price per share or per unit of warrants or rights outstanding.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of new stock issued during the period.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

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Fair value portion of warrants not settleable in cash classified as equity.

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Stockholders' equity - Additional Information (Detail) $ / shares in Units, $ in Millions			2 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2025 $ / shares shares	Jun. 06, 2025 $ / shares shares	Oct. 31, 2023 $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Apr. 30, 2025 shares	Mar. 31, 2025 shares	Dec. 31, 2024 USD ($) $ / shares shares	Jul. 01, 2024 $ / shares shares	Dec. 31, 2023 $ / shares shares	Aug. 31, 2023 USD ($) $ / shares shares	Apr. 30, 2023 USD ($) $ / shares shares
Preferred Stock, Shares Authorized		500,000,000
Preferred Stock, Par or Stated Value Per Share \| $ / shares		$ 0.0001
Number of warrants purchased						4,500,000		2,900,000			3,600,000	4,500,000
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares								$ 22.71			$ 25.09	$ 42.14
Warrants Not Settleable in Cash, Fair Value Disclosure \| $								$ 56.1			$ 43.9	$ 80.1
Warrants Expired	3,400,000			3,400,000	3,400,000
Warrants transaction costs \| $				$ 4.6	$ 5.6
Shares Authorized For Donation							2,682,392
Percent Of Share Approved For Donation							1.00%
Treasury Stock, Common [Member]
Stock Repurchased During Period, Shares			0.3
Stock Repurchased Price Per Shares \| $ / shares			$ 25.09
Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input								0.53			0.51	0.44
Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input								0.0443				0.0345
Warrants Expired								4.43			4.38	3.45
Common Class A [Member]
Common Stock, Shares Authorized	2,500,000,000	2,500,000,000		2,500,000,000	2,500,000,000			300,000,000	300	262,500,000
Common Stock, Par or Stated Value Per Share \| $ / shares	$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001			$ 0.0001	$ 0.0001	$ 0.0001
Conversion of Stock, Shares Converted		19,600,000
Common Class A [Member] \| Convertible Preferred Stock [Member]
Conversion of Stock, Shares Converted		139,800,000
Common Class B [Member]
Common Stock, Shares Authorized	500,000,000	500,000,000		500,000,000	500,000,000			0	300
Common Stock, Par or Stated Value Per Share \| $ / shares	$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001			$ 0.0001	$ 0.0001
Common Class C [Member]
Common Stock, Shares Authorized	500,000,000	500,000,000		500,000,000	500,000,000			0
Common Stock, Par or Stated Value Per Share \| $ / shares	$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001			$ 0.0001
IPO [Member]
Preferred Stock, Shares Authorized		500,000,000
Preferred Stock, Par or Stated Value Per Share \| $ / shares		$ 0.0001
IPO [Member] \| Common Class A [Member]
Stock Issued During Period, Shares, New Issues	19,900,000				19,900,000
Shares Issued, Price Per Share \| $ / shares	$ 31			$ 31	$ 31
Common Stock, Shares Authorized		2,500,000,000
Common Stock, Par or Stated Value Per Share \| $ / shares		$ 0.0001
IPO [Member] \| Common Class A [Member] \| Convertible Preferred Stock [Member]
Conversion of Stock, Shares Converted		139,800,000
IPO [Member] \| Common Class B [Member]
Common Stock, Shares Authorized		500,000,000
Common Stock, Par or Stated Value Per Share \| $ / shares		$ 0.0001
IPO [Member] \| Common Class C [Member]
Common Stock, Shares Authorized		500,000,000
Common Stock, Par or Stated Value Per Share \| $ / shares		$ 0.0001