Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Stock-Based Compensation

Schedule of stock option activity

				Weighted
				Average	Aggregate
		Weighted		Remaining	Intrinsic
		Average		Contractual	Value
	Options	Exercise Price		Term (in years)	(in millions)
Options outstanding at January 1, 2024	60,390,162	$	50.45	5.81	$	2,939.5
Options granted	58,031		90.72
Options exercised	(3,156,425)		37.27
Options forfeited	(43,137)		65.02
Options outstanding at March 31, 2024	57,248,631	$	51.21	5.69	$	3,671.9
Vested and non-vested options expected to vest at March 31, 2024	55,794,585	$	50.80	5.63	$	3,601.3
Exercisable options at March 31, 2024	34,849,870	$	43.54	4.53	$	2,502.7

Summary of status of non-vested options and changes during the year

		Weighted
		Average
		Fair Value at
	Options	Grant Date
Non-vested options at January 1, 2024	22,523,981	$	14.57
Options granted	58,031		26.36
Options vested	(146,726)		15.79
Options forfeited	(36,525)		17.73
Non-vested options at March 31, 2024	22,398,761	$	14.58

Summary of activity in the option plans

	Three Months Ended
	March 31,
	2024		2023
Total intrinsic value of stock options exercised	$	215.8	$	125.7
Total fair value of stock options vested		2.3		2.3