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Earnings per Share (Antidilutive Securities Not Included in Computation of Diluted EPS) (Details) - $ / shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Earnings Per Share [Abstract] |  |  |  |
Antidilutive stock options excluded from diluted shares (in shares) | 2,927,469 | 3,396,951 | 3,066,166 | 3,622,106
Weighted average price of these options (in USD per share) | $ 45.38 | $ 50.22 | $ 45.66 | $ 50.56

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- Definition Antidilutive Securities Excluded From Computation Of Earnings Per Share Weighted Average Price + References No definition available. + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- References No definition available. + Details
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