Stock-Based Compensation Plans (Exercise Price Range) (Details) (USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding - Shares	10,708,694
Options Outstanding - Per share weighted-average exercise price	$ 34.27
Options Outstanding - Weighted-average remaining contractual life	3 years 6 months
Options Exercisable - Shares	9,808,694
Options Exercisable - Per share weighted-average exercise price	$ 35.60
Options Exercisable - Weighted-average remaining contractual life	3 years 1 month
$13.39 - $22.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per share exercise prices, lower range	$ 13.39
Range of per share exercise prices, upper range	$ 22.99
Options Outstanding - Shares	2,318,742
Options Outstanding - Per share weighted-average exercise price	$ 20.26
Options Outstanding - Weighted-average remaining contractual life	6 years 8 months
Options Exercisable - Shares	1,578,742
Options Exercisable - Per share weighted-average exercise price	$ 20.89
Options Exercisable - Weighted-average remaining contractual life	6 years 0 months
$23.00 - $30.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per share exercise prices, lower range	$ 23.00
Range of per share exercise prices, upper range	$ 30.99
Options Outstanding - Shares	2,410,252
Options Outstanding - Per share weighted-average exercise price	$ 25.31
Options Outstanding - Weighted-average remaining contractual life	5 years 4 months
Options Exercisable - Shares	2,250,252
Options Exercisable - Per share weighted-average exercise price	$ 25.41
Options Exercisable - Weighted-average remaining contractual life	5 years 1 month
$31.00 - $45.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per share exercise prices, lower range	$ 31.00
Range of per share exercise prices, upper range	$ 45.99
Options Outstanding - Shares	3,356,418
Options Outstanding - Per share weighted-average exercise price	$ 40.30
Options Outstanding - Weighted-average remaining contractual life	2 years 2 months
Options Exercisable - Shares	3,356,418
Options Exercisable - Per share weighted-average exercise price	$ 40.30
Options Exercisable - Weighted-average remaining contractual life	2 years 2 months
$46.00 - $48.03
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per share exercise prices, lower range	$ 46.00
Range of per share exercise prices, upper range	$ 48.03
Options Outstanding - Shares	2,623,282
Options Outstanding - Per share weighted-average exercise price	$ 47.20
Options Outstanding - Weighted-average remaining contractual life	0 years 7 months
Options Exercisable - Shares	2,623,282
Options Exercisable - Per share weighted-average exercise price	$ 47.20
Options Exercisable - Weighted-average remaining contractual life	0 years 7 months

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

+ Details

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- Definition

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

+ References

+ Details

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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