CAPITAL STOCK

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

CAPITAL STOCK

CAPITAL STOCK

On October 27, 2006, a three-year $1 billion share repurchase program was approved by our Board of Directors (2006 Share Repurchase Program). On December 16, 2008, the provisions of the share repurchase program were modified by our Board of Directors to replace the original three-year term with an indefinite term. We repurchased 2.0 shares of common stock for $80.0 during the three months ended March 31, 2015 under this program. We did not repurchase any shares of common stock during the three months ended March 31, 2014. To date, under the 2006 Share Repurchase Program, the Company has repurchased 18.4 shares for $759.3.

Separate from the 2006 Share Repurchase Program, the Company repurchased 0.1 shares and 0.1 shares for an aggregate price of $3.6 and $4.8, during the three months endedMarch 31, 2015 and 2014, respectively, in settlement of employee tax withholding obligations due upon the vesting of restricted stock units.