Equity Plans and Share Repurchase Program - Restricted Stock Units Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Stock-based Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining shares available for grant under the plans	45.5
RSUs
Number of Shares
Balance, beginning (shares)	7.6
Granted (shares)	2.6
Forfeited (shares)	(0.2)
Vested (shares)	(1.1)
Balance, ending (shares)	8.9
Weighted-Average Grant Date Fair Value per Share
Balance, beginning (in dollars per share)	$ 81.51
Granted (in dollars per share)	80.00
Forfeited (in dollars per share)	78.87
Vested (in dollars per share)	82.49
Balance, ending (in dollars per share)	$ 81.02
Award vesting period	4 years
Compensation cost not yet recognized	$ 665.7
Compensation cost not yet recognized period of recognition	2 years 10 months 24 days
Restricted Stock Units And Performance Shares
Weighted-Average Grant Date Fair Value per Share
Shares withheld for taxes	0.4	0.5
Amount withheld for taxes	$ 36.5	$ 53.8

Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement.

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