Earnings Per Share	9 Months Ended
Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE We compute earnings per share using a two-class method, an earnings allocation method used when a company’s capital structure includes either two or more classes of common stock or common stock and participating securities. This method determines earnings per share based on dividends declared on common stock and participating securities (i.e., distributed earnings), as well as participation rights of participating securities in any undistributed earnings. Earnings per share is computed using both basic shares and diluted shares. The difference between basic and diluted shares is that diluted shares include the dilutive effect of the assumed exercise of outstanding securities. Our stock options, stock-settled long-term performance awards and restricted stock units could have a significant impact on diluted shares. Securities that could potentially be dilutive are excluded from the computation of diluted earnings per share when a loss from continuing operations exists or when the exercise price exceeds the market value of our Class A Common Stock, because their inclusion would result in an anti-dilutive effect on per share amounts. There were no anti-dilutive stock options, stock-settled long-term performance awards or restricted stock units excluded from the computation of diluted earnings per share in the third quarter and first nine months of 2018. There were approximately 2 million stock options excluded from the computation of diluted earnings per share because they were anti-dilutive in the third quarter and first nine months of 2017, respectively. There were no anti-dilutive restricted stock units or stock-settled long-term incentive compensation awards excluded from the computation of diluted earnings per share in the third quarter and first nine months of 2017.

EARNINGS PER SHARE

We compute earnings per share using a two-class method, an earnings allocation method used when a company’s capital structure includes either two or more classes of common stock or common stock and participating securities. This method determines earnings per share based on dividends declared on common stock and participating securities (i.e., distributed earnings), as well as participation rights of participating securities in any undistributed earnings.

Earnings per share is computed using both basic shares and diluted shares. The difference between basic and diluted shares is that diluted shares include the dilutive effect of the assumed exercise of outstanding securities. Our stock options, stock-settled long-term performance awards and restricted stock units could have a significant impact on diluted shares.

Securities that could potentially be dilutive are excluded from the computation of diluted earnings per share when a loss from continuing operations exists or when the exercise price exceeds the market value of our Class A Common Stock, because their inclusion would result in an anti-dilutive effect on per share amounts.

There were no anti-dilutive stock options, stock-settled long-term performance awards or restricted stock units excluded from the computation of diluted earnings per share in the third quarter and first nine months of 2018. There were approximately 2 million stock options excluded from the computation of diluted earnings per share because they were anti-dilutive in the third quarter and first nine months of 2017, respectively. There were no anti-dilutive restricted stock units or stock-settled long-term incentive compensation awards excluded from the computation of diluted earnings per share in the third quarter and first nine months of 2017.