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Equity Plans and Share Repurchase Program - Restricted Stock Units Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Stock-based Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining shares available for grant under the plans	48.8		48.8
RSUs
Number of Shares
Balance, beginning (shares)			8.4
Granted (shares)			2.9
Forfeited (shares)			(0.7)
Vested (shares)			(2.8)
Balance, ending (shares)	7.8		7.8
Weighted-Average Grant Date Fair Value per Share
Balance, beginning (in dollars per share)			$ 64.70
Granted (in dollars per share)			104.05
Forfeited (in dollars per share)			74.80
Vested (in dollars per share)			60.50
Balance, ending (in dollars per share)	$ 80.32		$ 80.32
Compensation cost not yet recognized	$ 535.6		$ 535.6
Compensation cost not yet recognized period of recognition			2 years 8 months 12 days
Restricted Stock Units And Performance Shares
Weighted-Average Grant Date Fair Value per Share
Shares withheld for taxes	0.3	0.3	1.0	1.2
Amount withheld for taxes	$ 26.6	$ 16.5	$ 103.8	$ 79.6