Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2023		257,700,000
Beginning balance at Dec. 31, 2023	$ 17,580.4	$ 2.6	$ 7,449.7	$ (14.3)	$ 10,142.4
Increase (Decrease) in Stockholders' Equity
Other comprehensive income (loss), net of tax	36.8			36.8
Net (loss) income	(2,494.0)				(2,494.0)
Repurchase of common stock (in shares)		(1,100,000)
Repurchases of common stock	(456.2)		(456.2)
Common stock withheld for employee tax obligations (in shares)		(700,000)
Common stock withheld for employee tax obligations	(314.0)		(314.0)
Issuance of common stock under benefit plans (in shares)		2,100,000
Issuance of common stock under benefit plans	71.7		71.7
Stock-based compensation expense	350.0		350.0
Ending balance (in shares) at Jun. 30, 2024		258,000,000.0
Ending balance at Jun. 30, 2024	14,774.7	$ 2.6	7,101.2	22.5	7,648.4
Beginning balance (in shares) at Mar. 31, 2024		258,300,000
Beginning balance at Mar. 31, 2024	18,546.6	$ 2.6	7,284.7	17.3	11,242.0
Increase (Decrease) in Stockholders' Equity
Other comprehensive income (loss), net of tax	5.2			5.2
Net (loss) income	(3,593.6)				(3,593.6)
Repurchase of common stock (in shares)		(800,000)
Repurchases of common stock	(315.8)		(315.8)
Common stock withheld for employee tax obligations (in shares)		(100,000)
Common stock withheld for employee tax obligations	(80.5)		(80.5)
Issuance of common stock under benefit plans (in shares)		600,000
Issuance of common stock under benefit plans	55.8		55.8
Stock-based compensation expense	157.0		157.0
Ending balance (in shares) at Jun. 30, 2024		258,000,000.0
Ending balance at Jun. 30, 2024	$ 14,774.7	$ 2.6	7,101.2	22.5	7,648.4
Beginning balance (in shares) at Dec. 31, 2024	256,940,382	256,900,000
Beginning balance at Dec. 31, 2024	$ 16,409.6	$ 2.6	6,672.4	127.8	9,606.8
Increase (Decrease) in Stockholders' Equity
Other comprehensive income (loss), net of tax	(228.9)			(228.9)
Net (loss) income	1,679.2				1,679.2
Repurchase of common stock (in shares)		(1,800,000)
Repurchases of common stock	(814.2)		(814.2)
Common stock withheld for employee tax obligations (in shares)		(600,000)
Common stock withheld for employee tax obligations	(276.4)		(276.4)
Issuance of common stock under benefit plans (in shares)		1,800,000
Issuance of common stock under benefit plans	65.9		65.9
Stock-based compensation expense	$ 340.2		340.2
Ending balance (in shares) at Jun. 30, 2025	256,293,058	256,300,000
Ending balance at Jun. 30, 2025	$ 17,175.4	$ 2.6	5,987.9	(101.1)	11,286.0
Beginning balance (in shares) at Mar. 31, 2025		257,000,000.0
Beginning balance at Mar. 31, 2025	16,496.3	$ 2.6	6,172.5	68.1	10,253.1
Increase (Decrease) in Stockholders' Equity
Other comprehensive income (loss), net of tax	(169.2)			(169.2)
Net (loss) income	1,032.9				1,032.9
Repurchase of common stock (in shares)		(900,000)
Repurchases of common stock	(397.3)		(397.3)
Common stock withheld for employee tax obligations	(5.9)		(5.9)
Issuance of common stock under benefit plans (in shares)		200,000
Issuance of common stock under benefit plans	47.4		47.4
Stock-based compensation expense	$ 171.2		171.2
Ending balance (in shares) at Jun. 30, 2025	256,293,058	256,300,000
Ending balance at Jun. 30, 2025	$ 17,175.4	$ 2.6	$ 5,987.9	$ (101.1)	$ 11,286.0