Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

Stock-Based Compensation

Schedule of stock option activity

	Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Options outstanding at January 1, 2014	26,844,452		$	25.90	7.08	$	501,706
Options granted	65,000		44.57
Options exercised	(629,932	)	20.21
Options forfeited	(102,920	)	29.90
Options outstanding at March 31, 2014	26,176,600		$	26.07	6.89	$	517,164
Options granted	6,047,000		47.72
Options exercised	(2,257,950	)	19.90
Options forfeited	(99,120	)	32.61
Options outstanding at June 30, 2014	29,866,530		$	30.90	7.46	$	515,908
Options granted	108,000		48.77
Options exercised	(1,483,440	)	20.47
Options forfeited	(94,320	)	36.39
Options outstanding at September 30, 2014	28,396,770		$	31.49	7.32	$	523,618
Vested and non-vested options expected to vest at September 30, 2014	25,649,402		$	31.10	7.23	$	483,163
Exercisable options at September 30, 2014	11,775,650		$	23.11	5.74	$	315,886

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

	Options		Weighted Average Fair Value at Grant Date
Non-vested options at January 1, 2014	16,033,842		$	7.39
Options granted	65,000		10.62
Options vested	(14,000	)	8.49
Options forfeited	(102,920	)	7.41
Non-vested options at March 31, 2014	15,981,922		$	7.40
Options granted	6,047,000		8.62
Options vested	(5,296,022	)	6.98
Options forfeited	(99,120	)	7.66
Non-vested options at June 30, 2014	16,633,780		$	7.97
Options granted	108,000		8.85
Options vested	(26,340	)	8.33
Options forfeited	(94,320	)	8.00
Non-vested options at September 30, 2014	16,621,120		$	7.98

Summary of activity in the option plans

	Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013
Total intrinsic value of stock options exercised	$	45,458	$	16,456	$	123,911	$	91,091
Total fair value of stock options vested	219		49		37,277		33,830