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Stock Based Compensation | 3 Months Ended
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Mar. 31, 2016
Stock-Based Compensation [Abstract] |
Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | Stock-Based Compensation The following table summarizes the Company's pre-tax compensation expense and related income tax benefit for the three month s ended March 31, 2016, and 2015 related to the Company's performance units and restricted stock.
| Three Months Ended March 31,
(In millions) | 2016 | 2015
Performance units |  |
Total shareholder return | $ | 1.1 |  | $ | 1.9 |
Earnings per share | 0.6 |  | 0.5 |
Total performance units | 1.7 |  | 2.4 |
Restricted stock | — |  | — |
Total compensation expense | 1.7 |  | 2.4 |
Less: Amount paid by unconsolidated affiliates | — |  | 0.3 |
Net compensation expense | $ | 1.7 |  | $ | 2.1 |
Income tax benefit | $ | 0.6 |  | $ | 0.8 |
The Company has issued new shares to satisfy restricted stock grants and payouts of earned performance units. During the three months ended March 31, 2016, there were no shares of new common stock issued pursuant to the Company's Stock Incentive Plan related to restricted stock grants (net of forfeitures) and payouts of earned performance units. During the three months ended March 31, 2016, there were 901 shares of restricted stock returned to the Company to satisfy tax liabilities. The following table summarizes the activity of the Company's stock-based compensation during the three months ended March 31, 2016.
| Units/Shares | Fair Value Per Share
Grants |  |  |  |
Performance units (Total shareholder return) | 280,604 |  | $ | 20.84 |
Performance units (Earnings per share) | 93,533 |  | $ | 26.59 |

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- Definition Stock-Based Compensation [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51659978&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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