Stockholders' Equity

12 Months Ended

Dec. 31, 2016

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Stockholders’ Equity

Stock Repurchase Program

In October 2013, the Board of Directors authorized a $750.0 million share repurchase program, effective from October

2013 through December 2016. In February 2016, the Board of Directors authorized a $1.0 billion share

repurchase program that superseded the October 2013 repurchase program and is effective from February 2016

through December 2018. The Company's goal for the share repurchase program is to offset the dilution created by its employee equity compensation programs and provide the flexibility to return capital to shareholders as business and market conditions warrant.

During the years ended December 31, 2016, 2015 and 2014, the Company repurchased 7.0 million, 4.5 million and 4.6 million shares, respectively, of its common stock for $373.8 million, $302.6 million and $268.6 million, respectively, pursuant to the current repurchase program as well as prior ones approved by the Board of Directors. As of December 31, 2016, the Company had $694.5 million available for future purchases of shares under the current repurchase program.

The Board of Directors authorized the retirement of all the outstanding shares of its treasury stock as of each of December 31, 2016, 2015 and 2014. The retired shares were returned to the number of authorized but unissued shares of the Company's common stock, and the retirement was recorded to additional paid-in capital.