Stock-Based Compensation (Details) |
12 Months Ended |
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Dec. 31, 2017
individual
shares
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| Share-based Compensation Arrangement by Share-based Payment Award Activity | |
| Number of participants with outstanding options, restricted stock, or restricted stock units | individual | 7,500 |
| Retirement age eligibility for employees | 55 years |
| Retirement eligibility for employees, minimum years of service required | 10 years |
| Percent of stock-based compensation related to retiree-eligible population (as a percent) | 35.00% |
| Long Term Incentive Plan | |
| Share-based Compensation Arrangement by Share-based Payment Award Activity | |
| Number of shares authorized | 123,965,000 |
| Number of shares available for grant | 30,125,144 |
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- Definition The number of participants with outstanding options, restricted stock, or restricted stock units. No definition available.
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- Definition Percent of stock-based compensation related to retiree-eligible population. No definition available.
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- Definition The age at which employees of the entity are eligible for retirement, which combined with reaching years of service triggers expense recognition of share based compensation expense, in years. No definition available.
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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