Stock Options and Restricted Stock - Schedule of Stock Options, By Exercise Price Range (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	51,673.000
Shares exercisable	48,916.000
9.12-11.52
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	4,498
Option Price per share, lower range limit	$ 9.12
Option Price per share, upper range per limit	$ 11.52
Weighted-average remaining contractual life (years)	7 years 9 months 21 days
Weighted-average exercise price	$ 10.18
Shares exercisable	2,275
20.37-20.70
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	2,666
Option Price per share, lower range limit	$ 20.37
Option Price per share, upper range per limit	$ 20.70
Weighted-average remaining contractual life (years)	5 years 6 months 7 days
Weighted-average exercise price	$ 20.49
Shares exercisable	2,132
28.20-31.38
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	6,384
Option Price per share, lower range limit	$ 28.20
Option Price per share, upper range per limit	$ 31.38
Weighted-average remaining contractual life (years)	4 years 0 months 20 days
Weighted-average exercise price	$ 29.90
Shares exercisable	6,384
34.68-35.97
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	1,015
Option Price per share, lower range limit	$ 34.68
Option Price per share, upper range per limit	$ 35.97
Weighted-average remaining contractual life (years)	3 years 0 months 20 days
Weighted-average exercise price	$ 35.07
Shares exercisable	1,015
38.37-41.73
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	12,482
Option Price per share, lower range limit	$ 38.37
Option Price per share, upper range per limit	$ 41.73
Weighted-average remaining contractual life (years)	2 years 1 month 20 days
Weighted-average exercise price	$ 41.42
Shares exercisable	12,482
42.00-46.95
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	23,795
Option Price per share, lower range limit	$ 42.00
Option Price per share, upper range per limit	$ 46.95
Weighted-average remaining contractual life (years)	2 years 8 months 2 days
Weighted-average exercise price	$ 45.00
Shares exercisable	23,795
57.21
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares	833
Option Price per share	$ 57.21
Weighted-average remaining contractual life (years)	3 years 0 months 20 days
Weighted-average exercise price	$ 57.21
Shares exercisable	833