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Stock-Based Compensation Plans | 3 Months Ended
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Mar. 31, 2019
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 March 31,
|  | 2019 |  | 2018
Restricted stock |  | $ | 0.8 |  |  | $ | 0.7 |
Restricted stock units |  | 1.4 |  |  | 2.4 |
Total |  | $ | 2.2 |  |  | $ | 3.1 |
A summary of the non-vested restricted stock activity is presented below:
Restricted Stock |  | Number of Shares |  | Weighted Average Grant-Date Fair Value Per Share
Non-vested as of December 31, 2018 |  | 150,647 |  |  | $ | 117.41 |
Granted |  | 5,301 |  |  | 441.54 |
Vested |  | (17,971 | ) |  | 148.14 |
Forfeited |  | (19 | ) |  | 350.41 |
Non-vested as of March 31, 2019 |  | 137,958 |  |  | $ | 125.83 |
A summary of the restricted stock unit activity is presented below:
Restricted Stock Units |  | Number of Restricted Stock Units |  | Weighted Average Grant-Date Fair Value Per Share
Outstanding as of December 31, 2018 |  | 516,773 |  |  | $ | 127.07 |
Granted |  | 1,500 |  |  | 436.41 |
Converted |  | (87,842 | ) |  | 106.54 |
Outstanding as of March 31, 2019 |  | 430,431 |  |  | $ | 132.34 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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- References No definition available. + Details
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