Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 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	120,780,324	$	25.23	5.81	$	2,939.5
Options granted	116,062		45.36
Options exercised	(6,312,850)		18.64
Options forfeited	(86,274)		32.51
Options outstanding at March 31, 2024	114,497,262		25.61	5.69		3,671.9
Options granted	7,700,731		65.95
Options exercised	(5,567,231)		20.95
Options forfeited	(289,042)		33.73
Options outstanding at June 30, 2024	116,341,720	$	28.48	5.81	$	4,524.7
Vested and non-vested options expected to vest at June 30, 2024	113,269,255	$	28.11	5.74	$	4,446.7
Exercisable options at June 30, 2024	80,614,167	$	23.12	4.76	$	3,566.9

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	45,047,962	$	7.28
Options granted	116,062		13.18
Options vested	(293,452)		7.89
Options forfeited	(73,050)		8.86
Non-vested options at March 31, 2024	44,797,522		7.29
Options granted	7,700,731		19.42
Options vested	(16,481,658)		5.80
Options forfeited	(289,042)		7.99
Non-vested options at June 30, 2024	35,727,553	$	10.59

Summary of activity in the option plans

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2024		2023		2024		2023
Total intrinsic value of stock options exercised	$	245.8	$	113.9	$	461.6	$	239.5
Total fair value of stock options vested		95.6		86.3		97.9		88.6

Schedule of restricted share activity

Restricted share activity for the three and six months ended June 30, 2024 was as follows:

				Weighted Average
				Remaining
	Restricted	Fair Value at		Amortization
	Shares	Grant Date		Term (in years)
Restricted shares outstanding at January 1, 2024	—	$	—
Restricted shares granted	—		—
Restricted shares outstanding at March 31, 2024	—		—
Restricted shares granted	21,840		65.96
Restricted shares outstanding at June 30, 2024	21,840	$	65.96	0.87