Capital Stock (Notes)	6 Months Ended
Jun. 30, 2015
Class of Stock [Line Items]
Capital Stock [Text Block]	CAPITAL STOCK Mandatory Convertible Preferred Stock On April 1, 2014, all outstanding shares of mandatory convertible preferred stock automatically converted into 27,573,735 shares of common stock, net of fractional shares, at a conversion rate of 2.7574 shares of common stock per share of preferred stock. Dividends In the first six months of 2015, we paid cash dividends of $32 million on our common stock. On July 15, 2015, the Board of Directors (or a duly authorized committee thereof) declared cash dividends of $0.06 per share of common stock, or approximately $16 million in the aggregate. The dividend will be paid on September 1, 2015 to stockholders of record as of the close of business on July 31, 2015. Future quarterly dividends are subject to Board approval. Common Stock Repurchases On September 18, 2013, the Board of Directors authorized $100 million for use in our common stock repurchase program. On May 27, 2014, the Board of Directors approved an increase in that authorization to $450 million. This program expires on December 31, 2016. We intend to repurchase shares of common stock in open market transactions in order to offset new shares issued under equity compensation programs and to provide for additional shareholder returns. During the second quarter and first six months of 2015, we repurchased 1,600,129 shares at an average price of $31.25 per share, or $50 million in the aggregate. In addition, we routinely repurchase shares delivered to us by employees as payment for the exercise price of stock options and the withholding taxes due upon the exercise of the stock options or the vesting or payment of stock awards. During the second quarter of 2015, we repurchased 36,169 shares at an average price of $29.00 per share, or $1 million in the aggregate. During the first six months of 2015, we repurchased 75,520 shares at an average price of $27.99 per share, or $2 million in the aggregate.

CAPITAL STOCK

Mandatory Convertible Preferred Stock

On April 1, 2014, all outstanding shares of mandatory convertible preferred stock automatically converted into 27,573,735 shares of common stock, net of fractional shares, at a conversion rate of 2.7574 shares of common stock per share of preferred stock.

Dividends

In the first six months of 2015, we paid cash dividends of $32 million on our common stock. On July 15, 2015, the Board of Directors (or a duly authorized committee thereof) declared cash dividends of $0.06 per share of common stock, or approximately $16 million in the aggregate. The dividend will be paid on September 1, 2015 to stockholders of record as of the close of business on July 31, 2015. Future quarterly dividends are subject to Board approval.

Common Stock Repurchases

On September 18, 2013, the Board of Directors authorized $100 million for use in our common stock repurchase program. On May 27, 2014, the Board of Directors approved an increase in that authorization to $450 million. This program expires on December 31, 2016. We intend to repurchase shares of common stock in open market transactions in order to offset new shares issued under equity compensation programs and to provide for additional shareholder returns. During the second quarter and first six months of 2015, we repurchased 1,600,129 shares at an average price of $31.25 per share, or $50 million in the aggregate.

In addition, we routinely repurchase shares delivered to us by employees as payment for the exercise price of stock options and the withholding taxes due upon the exercise of the stock options or the vesting or payment of stock awards. During the second quarter of 2015, we repurchased 36,169 shares at an average price of $29.00 per share, or $1 million in the aggregate. During the first six months of 2015, we repurchased 75,520 shares at an average price of $27.99 per share, or $2 million in the aggregate.