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Share-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2015
Share-based Compensation [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The fair values of our stock options are calculated using the following weighted average assumptions for the nine months ended September 30, 2015:
|  | Nine Months Ended
Assumptions |  | September 30, 2015
Dividend yield |  | 1.8 | %
Expected volatility |  | 23.3 | %
Risk-free interest rate |  | 1.3 | %
Expected holding period (in years) |  | 4.0 |
Schedule of Share-based Compensation, Stock Options, Activity | The following table sets forth stock option activity for the nine months ended September 30, 2015:
| Options |  | Weighted-Average Exercise Price
Outstanding at December 31, 2014 | 12,107,106 |  |  | $ | 11.63 |
Granted | 2,036,010 |  |  | $ | 23.00 |
Exercised | (2,945,438 | ) |  | $ | 10.44 |
Canceled | (21,400 | ) |  | $ | 20.59 |
Outstanding at September 30, 2015 | 11,176,278 |  |  | $ | 13.98 |
Exercisable at September 30, 2015 | 7,008,300 |  |  | $ | 10.58 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | Restricted share activity for the nine months ended September 30, 2015 was as follows:
| Restricted Shares |  | Weighted-Average Grant-Date Fair Value
Nonvested restricted shares at December 31, 2014 | 1,319,260 |  |  | $ | 13.39 |
Granted | 253,791 |  |  | $ | 23.00 |
Forfeited | (3,840 | ) |  | $ | 20.47 |
Vested | (990,558 | ) |  | $ | 12.37 |
Nonvested restricted shares at September 30, 2015 | 578,653 |  |  | $ | 19.32 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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