Equity Plans and Share Repurchase Program - Employee Stock Options (Details) - Stock options - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Number of Shares
Balance - Beginning (in shares)	7.4
Granted (in shares)	0.6
Forfeited (in shares)	0.0
Exercised (in shares)	(0.8)
Balance - Ending (in shares)	7.2		7.4
Weighted- Average Exercise Price
Balance - Beginning (in dollars per share)	$ 49.39
Granted (in dollars per share)	80.00
Forfeited (in dollars per share)	90.29
Exercised (in dollars per share)	22.24
Balance - Ending (in dollars per share)	$ 54.66		$ 49.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options outstanding, Weighted average remaining contractual life (in years)			3 years
Options outstanding, Aggregate intrinsic value			$ 241.7
Options vested and expected to vest, Outstanding (in shares)	7.2
Options vested and expected to vest, Weighted average exercise price (in dollars per share)	$ 54.66
Options vested and expected to vest, Weighted average remaining contractual life (in years)	3 years 3 months 18 days
Options vested and expected to vest, Aggregate intrinsic value	$ 210.2
Options exercisable, Outstanding (in shares)	5.2
Options exercisable, Weighted average exercise price (in dollars per share)	$ 44.89
Options exercisable, Weighted average remaining contractual life (in years)	2 years 4 months 24 days
Options exercisable, Aggregate intrinsic value	$ 197.3
Compensation cost not yet recognized	$ 61.6
Compensation cost not yet recognized period of recognition	2 years 10 months 24 days
Weighted-average fair value per share granted	$ 32.91	$ 44.34
Intrinsic value of options exercised	$ 47.8	$ 102.3
Fair value of options vested	$ 10.9	$ 9.5