Stock-based Compensation Expense (Details 2) - Jun. 30, 2015 - $ / shares shares in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price range, options outstanding (in shares)	11,933
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	7 years 2 months 19 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 66.92
Exercise price range, options exercisable (in shares)	5,653
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 52.06
$17.16–$20.00
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	17.16
Exercise price, high end of range (usd per share)	$ 20.00
Exercise price range, options outstanding (in shares)	147
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	2 years 6 months 7 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 18.87
Exercise price range, options exercisable (in shares)	147
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 18.87
$20.01–$40.00
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	20.01
Exercise price, high end of range (usd per share)	$ 40
Exercise price range, options outstanding (in shares)	2,888
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	4 years 15 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 34.82
Exercise price range, options exercisable (in shares)	2,534
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 34.60
$40.01–$60.00
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	40.01
Exercise price, high end of range (usd per share)	$ 60
Exercise price range, options outstanding (in shares)	3,015
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	7 years 1 month 13 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 48.32
Exercise price range, options exercisable (in shares)	1,534
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 49.67
$60.01–$80.00
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	60.01
Exercise price, high end of range (usd per share)	$ 80
Exercise price range, options outstanding (in shares)	1,705
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	8 years 7 months 6 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 75.99
Exercise price range, options exercisable (in shares)	539
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 74.93
$80.01–$100.00
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	80.01
Exercise price, high end of range (usd per share)	$ 100
Exercise price range, options outstanding (in shares)	2,108
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	8 years 6 months 26 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 90.22
Exercise price range, options exercisable (in shares)	621
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 86.72
$100.01–$120.00
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	100.01
Exercise price, high end of range (usd per share)	$ 120
Exercise price range, options outstanding (in shares)	1,868
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	9 years 6 months 29 days
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 109.24
Exercise price range, options exercisable (in shares)	113
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 109.25
$120.01–$127.54
Share-based Compensation Arrangement by Share-based Payment Award
Exercise price, low end of range (usd per share)	120.01
Exercise price, high end of range (usd per share)	$ 127.54
Exercise price range, options outstanding (in shares)	202
Exercise price range, options outstanding, weighted-average remaining contractual life (in years)	9 years 11 months 1 day
Exercise price range, options outstanding, weighted-average exercise price (in dollars per share)	$ 127.31
Exercise price range, options exercisable (in shares)	165
Exercise price range, options exercisable, weighted-average exercise price (in dollars per share)	$ 127.54