Capital Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended				9 Months Ended		12 Months Ended
	Mar. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Class of Stock [Line Items]
Shares authorized total						5,000,000,000
Common stock par or stated value per share		$ 0.0001				$ 0.0001		$ 0.0001
Common stock shares issued		647,182,603				647,182,603		629,207,115
Common stock shares outstanding		647,182,603				647,182,603		629,207,115
Issuance of restricted stock awards for business acquisition				10,356,096
Issuance of common stock, Shares						72,000,000	171,500,000
Repurchase of common stock						$ 212,485	$ 0
Repurchase and retirement of common stock		$ 44,988	$ 100,220	$ 72,275
Preferred stock shares issued		0				0		0
Preferred stock shares outstanding		0				0		0
Preferred stock shares authorised		100,000,000				100,000,000		100,000,000
Preferred stock par or stated value per share		$ 0.0001				$ 0.0001		$ 0.0001
Common stock shares description of voting rights						one
Resticted Common Stock [Member]
Class of Stock [Line Items]
Issuance of restricted stock awards for business acquisition						10,356,096
Fair value of the restricted shares issued						$ 118,200
Purchase consideration						71,500
Stock-based compensation over the vesting period						$ 46,700
Share Repurchase Program [Member]
Class of Stock [Line Items]
Common stock repurchased		4,779,310				22,767,637
Repurchase of common stock		$ 44,900				$ 217,200
Repurchase and retirement of common stock, shares								300,000,000
Fees related to repurchase of shares		$ 100				$ 300
No of shares outstanding		82,800,000				82,800,000
Secondary Offering [Member]
Class of Stock [Line Items]
Repurchase and retirement of common stock, shares	7,000,000
Repurchase and retirement of common stock	$ 72,300
Stock issuance cost incurred		$ 200			$ 1,000	$ 600	$ 2,000
Common Class A [Member]
Class of Stock [Line Items]
Common stock par or stated value per share		$ 0.0001				$ 0.0001