Stock-Based Compensation (Valuation Assumptions) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)		6 years	6 years
Expected stock price volatility		32.80%	35.10%
Risk-free interest rate		1.30%	1.10%
Dividend yield		1.50%	0.80%
Weighted-average estimated fair value		$ 9.35	$ 10.85
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	11 months	8 months	1 year
Expected stock price volatility	25.20%	28.10%	36.80%
Risk-free interest rate	0.10%	0.10%	0.20%
Dividend yield	1.90%	1.80%	1.10%
Weighted-average estimated fair value	$ 7.66	$ 7.87	$ 9.61
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.70%	0.30%	0.30%
Dividend yield	1.90%	1.30%	1.00%
Weighted-average estimated fair value	$ 31.02	$ 32.19	$ 32.67
Performance-based Restricted Stock Units (Market-based) (PRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected stock price volatility	32.20%	34.70%	34.90%
Expected SOX stock price volatility	24.30%	27.10%	28.90%
Risk-free interest rate	0.90%	0.30%	0.30%
Dividend yield	1.90%	1.20%	1.10%
Weighted-average estimated fair value	$ 31.18	$ 33.03	$ 41.18

Expected volatility rate for the Philadelphia Semiconductor Index ("SOX") total shareholder return

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Estimated Fair Value

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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 (f)(2)(iii)

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

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- Definition

Expected term of share-based compensation awards, 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 S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.D.2)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(i)

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ 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 (f)(2)(ii)

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

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ 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 (f)(2)(iv)

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

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