Common Stock, Preferred Stock and Equity Plans - Outstanding and Exercisable Options (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock Options
Outstanding at beginning of period (in shares)	1,940
Granted (in shares)	14
Exercised (in shares)	(360)
Outstanding at end of period (in shares)	1,594	1,940
Exercisable (in shares)	1,594
Weighted-average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 151.37
Granted (in dollars per share)	399.71
Exercised (in dollars per share)	139.07
Outstanding at end of period (in dollars per share)	156.36	$ 151.37
Exercisable (in dollars per share)	$ 156.36
Weighted-average Remaining Contractual Life
Outstanding (in years)	3 years 2 months 15 days
Exercisable (in years)	3 years 2 months 15 days
Aggregate Intrinsic Value
Outstanding	$ 392.6
Exercisable	$ 392.6
Market share price (in dollars per share)	$ 402.70
Total intrinsic value of stock options exercised	$ 112.8	$ 128.4	$ 157.2
Total cash received from employees as a result of employee stock option exercises	$ 50.0	$ 80.8	$ 144.6
Maximum | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years