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Common Stock - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Sep. 30, 2025	Feb. 28, 2026	May 08, 2025	Feb. 28, 2025
Performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award
Granted (in shares)	1,200,000
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award
Aggregate unrecognized compensation cost	$ 271,200,000
Aggregate grant-date fair value, weighted average period (in years)	11 months
Granted (in shares)	16,753,000
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award
Stock repurchase program authorized amount			$ 1,000,000,000.0	$ 750,000,000	$ 500,000,000
Additional shares under stock repurchase program				250,000,000
Shares repurchased (in shares)	21,300,000
Repurchase of common stock	$ 300,000,000.0
Remaining authorized share repurchase amount	$ 950,000,000.0
Class B Common Stock
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares issued upon conversion		8,500,000