CAPITAL STOCK

6 Months Ended

Jun. 30, 2015

Equity [Abstract]

CAPITAL STOCK

CAPITAL STOCK

On October 27, 2006, a three-year $1 billion share repurchase program was approved by the Board of Directors (2006 Share Repurchase Program). On December 16, 2008, the provisions of the 2006 Share Repurchase Program were modified by the Board of Directors to replace the original three-year term with an indefinite term. We repurchased 2.0 and 0.2 shares of common stock for $80.0 and $10.0 during the six months ended June 30, 2015 and 2014, respectively, under this program. 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 $3.7 and $4.9, during the six months endedJune 30, 2015 and 2014, respectively, in settlement of employee tax withholding obligations due upon the vesting of restricted stock units.