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Stock-Based Compensation Plans | 6 Months Ended
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Jun. 30, 2014
Share-based Compensation [Abstract] |
Stock-Based Compensation Plans | STOCK-BASED COMPENSATION PLANS Stock-based compensation expense consists of the following:
(In millions) | For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
Restricted stock | $ | 0.7 |  |  | $ | 1.0 |  |  | $ | 1.6 |  |  | $ | 1.6 |
Restricted stock units | 2.7 |  |  | 2.2 |  |  | 6.2 |  |  | 3.1 |
Total | $ | 3.4 |  |  | $ | 3.2 |  |  | $ | 7.8 |  |  | $ | 4.7 |
A summary of the restricted stock unit activity is presented below:
| Number of Restricted Stock Units |  | Weighted Average Grant-Date Fair Value Per Share
Outstanding as of January 1, 2014 | 1,099,157 |  |  | $ | 48.23 |
Granted | 71,900 |  |  | 130.16 |
Converted | (300,875 | ) |  | 26.53 |
Forfeited | (7,500 | ) |  | 130.16 |
Outstanding as of June 30, 2014 | 862,682 |  |  | 61.91 |
During the second quarter of 2014, 7,500 restricted stock units were forfeited. There were no restricted stock units granted or converted during the second quarter of 2014.

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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 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: 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 3: 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=6406099&loc=d3e25284-112666 Reference 4: 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 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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