Stockholders Equity (Notes)

12 Months Ended

Dec. 31, 2018

Stockholders' Equity Attributable to Parent [Abstract]

Stockholders’ Equity

Stockholders’ Equity

During 2018 we acquired 36 million of common shares at a cost of $700 million under our share repurchase program. As of December 31, 2018 the total remaining share repurchase authorization was $800 million. Purchases under the program are made at our discretion and may be in either open market transactions, including block purchases, or in privately negotiated transactions using cash on hand, cash generated from operations, proceeds from potential asset sales or cash from available borrowings to acquire shares. This program may be changed based upon our financial condition or changes in market conditions and is subject to termination prior to completion. The repurchase program does not include specific price targets or timetables. Shares repurchased as of December 31, 2018 were held as treasury stock. There were no share repurchases during 2017 under our publicly announced plans or programs.