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Share-Based Awards (Stock Options) (Narrative) (Details) - shares | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Options granted during period (in shares) | 0 | 0 | 0

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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