Stock-Based Compensation Non-Qualified Stock Options Activity (Details) - NSO	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, shares, beginning of period	974,518
Outstanding, beginning of period, weighted average exercise price | $ / shares	$ 70.90
Granted, shares	449,197
Granted, weighted average exercise price | $ / shares	$ 57.91
Exercised, shares	(3,370)
Exercised, weighted average exercise price | $ / shares	$ 49.40
Forfeitures, shares	(130,090)
Forfeitures, weighted average exercise price | $ / shares	$ 61.12
Cancellations, shares	(3,488)
Cancellations, weighted average exercise price | $ / shares	$ 67.59
Adjustments due to the Special Cash Dividend	145,219
Outstanding, shares, end of period	1,431,986	[1]
Outstanding, end of period, weighted average exercise price | $ / shares	$ 60.58	[1]
Vested and exercisable, shares end of period	310,357	[1]
Vested and exercisable, weighted average exercise price, end of period | $ / shares	$ 61.89	[1]

[1] The weighted average exercise price of options outstanding as of September 30, 2015 reflects the adjustment for the Special Cash Dividend.