Shareholders' Equity

12 Months Ended

Dec. 31, 2017

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders' Equity

During 2017, 2016, and 2015, we repurchased $359.8 million, $540.1 million and $749.5 million, respectively, of shares associated with our $5.00 billion share repurchase program announced in 2013. As of December 31, 2017, there were $2.05 billion of shares remaining in that program. A payment of $60.0 million was made in 2016 for shares repurchased in 2017.

We have 5.0 million authorized shares of preferred stock. As of December 31, 2017 and 2016, no preferred stock was issued.

We have an employee benefit trust that held 50.0 million shares of our common stock at both December 31, 2017 and 2016, to provide a source of funds to assist us in meeting our obligations under various employee benefit plans. The cost basis of the shares held in the trust was $3.01 billion at both December 31, 2017 and 2016, and is shown as a reduction of shareholders’ equity. Any dividend transactions between us and the trust are eliminated. Stock held by the trust is not considered outstanding in the computation of EPS. The assets of the trust were not used to fund any of our obligations under these employee benefit plans during the years ended December 31, 2017, 2016, and 2015.