Stock-Based Compensation (Details 9) (Stock Appreciation Rights [Member], USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013
Stock Appreciation Rights [Member]
Schedule of information on stock units
Outstanding awards, beginning of period	2.2
Outstanding, Weighted-Average Exercise Price per Share, beginning of period	$ 38.93	$ 45.58
Granted	0.3
Granted, Weighted-Average Excercise Price per Share	$ 81.11
Exercised	(0.6)
Exercised, Weighted-Average Exercise Price per Share	$ 36.80
Forfeited	(0.1)
Forfeited, Weighted-Average Exercise Price per Share	$ 40.16
Outstanding awards, end of period	1.8
Exercisable at end of year, shares	1.1
Exercisable at end of year, Weighted-Average Exercise Price per Share	$ 37.81