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Stock-based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2015
Supplemental Employee Incentive Plan IV |
Stock-Based Compensation arrangements |
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions | The following assumptions were used to determine the period-end fair value of the SEIP IV liability using a Monte Carlo simulation model:
| September 30, 2015
Stock price volatility | 39.3 | %
Risk free rate of return | 0.6 | %
Annual salary increase rate | 4.0 | %
Annual turnover rate | 4.6 | %
TSR Performance Share Awards |
Stock-Based Compensation arrangements |
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions | The following assumptions were used to determine the grant date fair value of the equity component (February 19, 2015) and the period-end fair value of the liability component of the TSR Performance Share Awards:
|  | Grant Date |  | September 30, 2015
Fair value per performance share award |  | $ | 19.29 |  |  | $7.66 - $10.04 |
Assumptions: |  |  |  |  |  |
Stock price volatility |  | 32.3 | % |  | 29.8% - 39.2% |
Risk free rate of return |  | 1.0 | % |  | 0.0% - 0.7% |
Expected dividend yield |  | 0.3 | % |  | 0.4 | %

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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