Equity and Cash Incentive Program - Outstanding and Exercisable Awards (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Stock Options [Member] | Exercise Price Range 1 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 38.00
Exercise Price Range, Upper Range Limit	$ 38.50
Number of Outstanding Shares	184,241
Outstanding Shares, Weighted Average Exercise Price	$ 38.00
Outstanding Shares, Weighted Average Remaining Contractual Term	1 year 1 month
Number of Exercisable Shares	184,241
Exercisable Shares, Weighted Average Exercise Price	$ 38.00
Exercisable Shares, Weighted Average Remaining Contractual Term	1 year 1 month
Stock Options [Member] | Exercise Price Range 2 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 39.00
Exercise Price Range, Upper Range Limit	$ 41.25
Number of Outstanding Shares	25,586
Outstanding Shares, Weighted Average Exercise Price	$ 41.20
Outstanding Shares, Weighted Average Remaining Contractual Term	0 years 1 month
Number of Exercisable Shares	25,586
Exercisable Shares, Weighted Average Exercise Price	$ 41.20
Exercisable Shares, Weighted Average Remaining Contractual Term	0 years 1 month
Stock Appreciation Rights (SARs) [Member] | Exercise Price Range 1 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 29.45
Exercise Price Range, Upper Range Limit	$ 42.88
Number of Outstanding Shares	2,535,719
Outstanding Shares, Weighted Average Exercise Price	$ 38.64
Outstanding Shares, Weighted Average Remaining Contractual Term	5 years 4 months
Number of Exercisable Shares	2,535,719
Exercisable Shares, Weighted Average Exercise Price	$ 38.64
Exercisable Shares, Weighted Average Remaining Contractual Term	5 years 4 months
Stock Appreciation Rights (SARs) [Member] | Exercise Price Range 2 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 46.00
Exercise Price Range, Upper Range Limit	$ 50.60
Number of Outstanding Shares	552,000
Outstanding Shares, Weighted Average Exercise Price	$ 48.80
Outstanding Shares, Weighted Average Remaining Contractual Term	2 years 7 months
Number of Exercisable Shares	552,000
Exercisable Shares, Weighted Average Exercise Price	$ 48.80
Exercisable Shares, Weighted Average Remaining Contractual Term	2 years 7 months
Stock Appreciation Rights (SARs) [Member] | Exercise Price Range 3 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 65.38
Exercise Price Range, Upper Range Limit	$ 71.86
Number of Outstanding Shares	4,433,041
Outstanding Shares, Weighted Average Exercise Price	$ 67.97
Outstanding Shares, Weighted Average Remaining Contractual Term	8 years 2 months
Number of Exercisable Shares	2,122
Exercisable Shares, Weighted Average Exercise Price	$ 65.98
Exercisable Shares, Weighted Average Remaining Contractual Term	3 years 11 months