Stock-Based Compensation (Details 4) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2014
Stockholders' Equity
Awards exercised (in shares)	1,127,000
Weighted-average exercise price of awards exercised (in dollars per share)	$ 14.09
Total cash proceed	$ 15.9

Number of share options (or share units) exercised during the current period.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

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

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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