Equity and Cash Incentive Program - Outstanding and Exercisable Awards (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Stock Appreciation Rights (SARs) [Member]
Exercise Price Range [Line Items]
Number of Outstanding Awards	7,640,742
Outstanding Awards, Aggregate Intrinsic Value	$ 140,695
Number of Exercisable Awards	3,631,702
Exercisable Awards, Aggregate Intrinsic Value	106,427
Stock Appreciation Rights (SARs) [Member] \| Exercise Price Range 1 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 25.96
Exercise Price Range, Upper Range Limit	$ 37.79
Number of Outstanding Awards	2,130,558
Outstanding Awards, Weighted Average Exercise Price	$ 34.01
Outstanding Awards, Weighted Average Remaining Contractual Term	4 years 6 months
Outstanding Awards, Aggregate Intrinsic Value	80,342
Number of Exercisable Awards	2,130,558
Exercisable Awards, Weighted Average Exercise Price	$ 34.01
Exercisable Awards, Weighted Average Remaining Contractual Term	4 years 6 months
Exercisable Awards, Aggregate Intrinsic Value	80,342
Stock Appreciation Rights (SARs) [Member] \| Exercise Price Range 2 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 40.54
Exercise Price Range, Upper Range Limit	$ 58.69
Number of Outstanding Awards	3,039,611
Outstanding Awards, Weighted Average Exercise Price	$ 55.97
Outstanding Awards, Weighted Average Remaining Contractual Term	5 years 8 months
Outstanding Awards, Aggregate Intrinsic Value	47,863
Number of Exercisable Awards	1,491,509
Exercisable Awards, Weighted Average Exercise Price	$ 54.26
Exercisable Awards, Weighted Average Remaining Contractual Term	4 years 11 months
Exercisable Awards, Aggregate Intrinsic Value	26,035
Stock Appreciation Rights (SARs) [Member] \| Exercise Price Range 3 [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 63.33
Exercise Price Range, Upper Range Limit	$ 82.51
Number of Outstanding Awards	2,470,573
Outstanding Awards, Weighted Average Exercise Price	$ 70.95
Outstanding Awards, Weighted Average Remaining Contractual Term	8 years 6 months
Outstanding Awards, Aggregate Intrinsic Value	12,490
Number of Exercisable Awards	9,635
Exercisable Awards, Weighted Average Exercise Price	$ 70.57
Exercisable Awards, Weighted Average Remaining Contractual Term	8 years 6 months
Exercisable Awards, Aggregate Intrinsic Value	50
Stock Options [Member]
Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 33.49
Exercise Price Range, Upper Range Limit	$ 34.73
Outstanding Awards, Aggregate Intrinsic Value	2,022
Exercisable Awards, Aggregate Intrinsic Value	$ 2,022

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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-Publisher FASB

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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