Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Restricted Stock and RSU Activity

RSU activity for the nine months ended September 30, 2024 is summarized below.

Outstanding at	RSUs			Weighted- Average Grant Date Fair Value
December 31, 2023		1,772,639		$	757.49
Granted		864,219		$	801.96
Converted		(760,294	)	$	760.09
Forfeited		(74,291	)	$	745.32
September 30, 2024		1,802,273		$	778.21

Stock Option Activity

Stock option activity and ending balance for the nine months ended September 30, 2024 is summarized below.

	2017 Performance-based Options					2023 Performance-based Options					2023 Time-based Options
	Shares Under Option			Weighted Average Exercise Price		Shares Under Option			Weighted Average Exercise Price		Shares Under Option			Weighted Average Exercise Price
Outstanding at December 31, 2023		1,549,080		$	513.50		807,695		$	673.58		326,391		$	673.58
Exercised		(481,740	)	$	513.50		—		$	—		—		$	—
Forfeited		(18,036	)	$	513.50		(40,725	)	$	673.58		(26,705	)	$	673.58
Outstanding at September 30, 2024		1,049,304		$	513.50		766,970		$	673.58		299,686		$	673.58

	Options Outstanding								Options Exercisable
Option Type	Exercise Prices		Options Outstanding		Weighted Average Remaining Life (years)		Aggregate Intrinsic Value (in millions)		Exercise Prices		Options Exercisable		Weighted Average Remaining Life (years)		Aggregate Intrinsic Value (in millions)
2017 Performance-based	$	513.50		1,049,304		2.2	$	458	$	513.50		509,416		2.2	$	222
2023 Performance-based	$	673.58		766,970		7.7		212	$	673.58		—		—		—
2023 Time-based	$	673.58		299,686		7.7		83	$	673.58		—		—		—
				2,115,960		4.9	$	753				509,416		2.2	$	222

Performance-Based RSUs [Member]

Restricted Stock and RSU Activity

Performance-based RSU activity for the nine months ended September 30, 2024 is summarized below.

Outstanding at	Performance- Based RSUs			Weighted- Average Grant Date Fair Value
December 31, 2023		456,384		$	767.69
Granted		165,631		$	798.83
Reduction of shares due to performance measures		(42,341	)	$	739.22
Converted		(115,631	)	$	739.22
Forfeited		(12,365	)	$	784.44
September 30, 2024		451,678		$	788.61