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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| Quarter Ended September 30, |  | Nine Months Ended September 30,
Dollar amounts in millions | 2016 |  | 2015 |  | 2016 |  | 2015
Total stock-based compensation expense (costs of sales and general and administrative) | $ | 3.2 |  |  | $ | 2.2 |  |  | $ | 9.4 |  |  | $ | 7.3 |
Income tax benefit related to stock-based compensation | $ | (0.4 | ) |  |  |  |  | $ | (3.2 | ) |  |  |
Impact on cash flow due to taxes paid related to net share settlement of equity awards | $ | 0.8 |  |  | $ | 0.1 |  |  | $ | 8.9 |  |  | $ | 5.4 |

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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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