Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Stock Compensation Plans [Abstract]

Schedule of Stock Option Activity

A summary of the activity for the Company’s stock options for the years ended December 31, 2019, 2018 and 2017, is as follows (shares in thousands, except per share data):

	Year Ended December 31,
	2019								2018								2017
	Shares				Weighted Average Exercise Price		Aggregate Intrinsic Value		Shares				Weighted Average Exercise Price		Aggregate Intrinsic Value		Shares				Weighted Average Exercise Price		Aggregate Intrinsic Value
Outstanding, beginning of period	10,410				$	225.53			9,649				$	201.83			9,592				$	181.39
Granted	1,847				$	298.84			1,507				$	350.40			1,175				$	302.87
Exercised	(1,271		)		$	186.90	$	247	(577		)		$	133.35	$	114	(1,044		)		$	124.32	$	219
Canceled	(437		)		$	270.94			(169		)		$	300.46			(74		)		$	251.63
Outstanding, end of period	10,549				$	241.14	$	2,573	10,410				$	225.53			9,649				$	201.83
Weighted average remaining contractual life	7			years					7			years					8			years
Options exercisable, end of period	3,119				$	161.13	$	1,011	2,194				$	122.19			1,734				$	90.56
Options expected to vest, end of period	7,430				$	274.74	$	1,563
Weighted average fair value of options granted	$	84.39							$	94.70							$	73.67

Schedule of Restricted Stock Activity

A summary of the activity for the Company’s restricted stock for the years ended December 31, 2019, 2018 and 2017, is as follows (shares in thousands, except per share data):

	Year Ended December 31,
	2019				2018				2017
	Shares		Weighted Average Grant Price		Shares		Weighted Average Grant Price		Shares		Weighted Average Grant Price
Outstanding, beginning of period	10		$	297.86	10		$	343.10	10		$	231.81
Granted	8		$	359.33	10		$	297.86	10		$	343.10
Vested	(10	)	$	297.86	(10	)	$	343.10	(10	)	$	231.81
Canceled	—		$	—	—		$	—	—		$	—
Outstanding, end of period	8		$	359.33	10		$	297.86	10		$	343.10

Schedule of Restricted Stock Unit Activity

A summary of the activity for the Company’s restricted stock units for the years ended December 31, 2019, 2018 and 2017, is as follows (shares in thousands, except per share data):

	Year Ended December 31,
	2019				2018				2017
	Shares		Weighted Average Grant Price		Shares		Weighted Average Grant Price		Shares		Weighted Average Grant Price
Outstanding, beginning of period	2,211		$	219.61	2,391		$	192.96	3,313		$	192.41
Granted	704		$	298.22	526		$	348.75	285		$	302.76
Vested	(729	)	$	206.88	(619	)	$	216.27	(1,159	)	$	216.21
Canceled	(127	)	$	250.85	(87	)	$	286.41	(48	)	$	234.99
Outstanding, end of period	2,059		$	249.45	2,211		$	219.61	2,391		$	192.96