Capital Stock	12 Months Ended
Dec. 31, 2013
Stockholders' Equity Note [Abstract]
Capital Stock	Capital Stock As of December 31, 2013, there were 150,224,000 shares of our common stock issued and 70,704,000 shares of common stock held in treasury, resulting in 79,520,000 shares of our common stock outstanding. Shareholder Rights Plan On July 27, 2006, our Board of Directors adopted a shareholder rights plan pursuant to a Rights Agreement with Wells Fargo Bank, N.A. (the "Rights Agent"), dated as of July 27, 2006 (the "Rights Agreement"). In connection with the Rights Agreement, on July 27, 2006, our Board of Directors declared a dividend distribution of one right (a "Right") for each outstanding share of Common Stock to stockholders of record at the close of business on August 7, 2006 (the "Record Date"). Our Board of Directors also authorized the issuance of one Right for each share of common stock issued after the Record Date and prior to the earliest of the Distribution Date (as defined below) the redemption of the Rights and the expiration of the Rights and, in certain circumstances, after the Distribution Date. Subject to certain exceptions and adjustment as provided in the Rights Agreement, each Right entitles the registered holder to purchase from us one one-thousandth (1/1000^th ) of a share of Series A Junior Participating Preferred Stock, par value of $0.001 per share, at a purchase price of $170.00 per Right (the "Purchase Price"). The terms of the Rights are set forth in the Rights Agreement. Rights will attach to all Common Stock certificates representing shares outstanding and no separate certificates evidencing the Rights will be distributed. Subject to certain exceptions contained in the Rights Agreement, the Rights will separate from the Common Stock upon the earliest of (i) 10 days following the public announcement of any person, together with its affiliates and associates (an Acquiring Person), becoming the beneficial owner of 15% or more of the outstanding Common Stock, (ii) 10 business days following the commencement of a tender or exchange offer that would result in any person, together with its affiliates and associates, becoming the beneficial owner of 15% or more of the outstanding Common Stock or (iii) 10 business days following the determination by our Board of Directors that a person, together with its affiliates and associates, has become the beneficial owner of 10% or more of the Common Stock and that such person is an “Adverse Person,” as defined in the Rights Agreement (the earliest of such dates being called the “Distribution Date”). The Rights Agreement provides that certain passive institutional investors that beneficially own less than 20% of the outstanding shares of the Common Stock shall not be deemed to be Acquiring Persons. The Rights will first become exercisable on the Distribution Date and will expire at the close of business on July 31, 2016 unless such date is extended or the Rights are earlier redeemed or exchanged by us as described below. Subject to certain exceptions contained in the Rights Agreement, in the event that any person shall become an Acquiring Person or be declared to be an Adverse Person, then the Rights will “flip-in” and entitle each holder of a Right, other than any Acquiring Person or Adverse Person and such person’s affiliates and associates, to purchase, upon exercise at the then-current exercise price of such Right, that number of shares of Common Stock having a market value of two times such exercise price. In addition, and subject to certain exceptions contained in the Rights Agreement, in the event that we are acquired in a merger or other business combination in which the Common Stock does not remain outstanding or is changed or 50% of the assets, cash flow or earning power of the Company is sold or otherwise transferred to any other person, the Rights will “flip-over” and entitle each holder of a Right, other than an Acquiring Person or an Adverse Person and such person’s affiliates and associates, to purchase, upon exercise at the then current exercise price of such Right, such number of shares of common stock of the acquiring company which at the time of such transaction would have a market value of two times such exercise price. We may redeem the Rights at a price of $0.01 per Right at any time until the earlier of (i) 10 days following the date that any Acquiring Person becomes the beneficial owner of 15% or more of the outstanding Common Stock and (ii) the date the Rights expire. In addition, at any time after a person becomes an Acquiring Person or is determined to be an Adverse Person and prior to such person becoming (together with such person's affiliates and associates) the beneficial owner of 50% or more of the outstanding Common Stock, at the election of our Board of Directors, the outstanding Rights (other than those beneficially owned by an Acquiring Person, Adverse Person or an affiliate or associate of an Acquiring Person or Adverse Person) may be exchanged, in whole or in part, for shares of Common Stock, or shares of preferred stock of the Company having essentially the same value or economic rights as such shares. Stock Repurchase Program On May 2, 2011, our Board of Directors authorized our stock repurchase program pursuant to which a total of $300 million of our outstanding common stock could be repurchased. On March 8, 2012, our Board of Directors approved a $323.7 million increase to our stock repurchase program. Subject to the approval of our Board of Directors, we may repurchase our common stock under our stock repurchase program from time to time in privately negotiated transactions, through accelerated stock repurchase programs or open market transactions, including pursuant to a trading plan in accordance with Rules 10b5-1 and 10b-18 of the Securities Exchange Act of 1934. The timing of any repurchases and the actual number of shares of stock repurchased will depend on a variety of factors, including the stock price, corporate and regulatory requirements, restrictions under the Company’s debt obligations, and other market and economic conditions. Our stock repurchase program may be suspended or discontinued at any time. During the year ended December 31, 2012, we repurchased 2.1 million shares of our common stock for aggregate consideration of $50.0 million under our stock repurchase program. During the year ended December 31, 2013, we repurchased 2.7 million shares of our common stock for aggregate consideration of $70.0 million under our stock repurchase program. The remaining authorization under our stock repurchase program as of December 31, 2013 was $280.0 million.

Capital Stock

As of December 31, 2013, there were 150,224,000 shares of our common stock issued and 70,704,000 shares of common stock held in treasury, resulting in 79,520,000 shares of our common stock outstanding.

Shareholder Rights Plan

On July 27, 2006, our Board of Directors adopted a shareholder rights plan pursuant to a Rights Agreement with Wells Fargo Bank, N.A. (the "Rights Agent"), dated as of July 27, 2006 (the "Rights Agreement").

In connection with the Rights Agreement, on July 27, 2006, our Board of Directors declared a dividend distribution of one right (a "Right") for each outstanding share of Common Stock to stockholders of record at the close of business on August 7, 2006 (the "Record Date"). Our Board of Directors also authorized the issuance of one Right for each share of common stock issued after the Record Date and prior to the earliest of the Distribution Date (as defined below) the redemption of the Rights and the expiration of the Rights and, in certain circumstances, after the Distribution Date. Subject to certain exceptions and adjustment as provided in the Rights Agreement, each Right entitles the registered holder to purchase from us one one-thousandth (1/1000^th ) of a share of Series A Junior Participating Preferred Stock, par value of $0.001 per share, at a purchase price of $170.00 per Right (the "Purchase Price"). The terms of the Rights are set forth in the Rights Agreement.

Rights will attach to all Common Stock certificates representing shares outstanding and no separate certificates evidencing the Rights will be distributed. Subject to certain exceptions contained in the Rights Agreement, the Rights will separate from the Common Stock upon the earliest of (i) 10 days following the public announcement of any person, together with its affiliates and associates (an Acquiring Person), becoming the beneficial owner of 15% or more of the outstanding Common Stock, (ii) 10 business days following the commencement of a tender or exchange offer that would result in any person, together with its affiliates and associates, becoming the beneficial owner of 15% or more of the outstanding Common Stock or (iii) 10 business days following the determination by our Board of Directors that a person, together with its affiliates and associates, has become the beneficial owner of 10% or more of the Common Stock and that such person is an “Adverse Person,” as defined in the Rights Agreement (the earliest of such dates being called the “Distribution Date”). The Rights Agreement provides that certain passive institutional investors that beneficially own less than 20% of the outstanding shares of the Common Stock shall not be deemed to be Acquiring Persons.

The Rights will first become exercisable on the Distribution Date and will expire at the close of business on July 31, 2016 unless such date is extended or the Rights are earlier redeemed or exchanged by us as described below.

Subject to certain exceptions contained in the Rights Agreement, in the event that any person shall become an Acquiring Person or be declared to be an Adverse Person, then the Rights will “flip-in” and entitle each holder of a Right, other than any Acquiring Person or Adverse Person and such person’s affiliates and associates, to purchase, upon exercise at the then-current exercise price of such Right, that number of shares of Common Stock having a market value of two times such exercise price.

In addition, and subject to certain exceptions contained in the Rights Agreement, in the event that we are acquired in a merger or other business combination in which the Common Stock does not remain outstanding or is changed or 50% of the assets, cash flow or earning power of the Company is sold or otherwise transferred to any other person, the Rights will “flip-over” and entitle each holder of a Right, other than an Acquiring Person or an Adverse Person and such person’s affiliates and associates, to purchase, upon exercise at the then current exercise price of such Right, such number of shares of common stock of the acquiring company which at the time of such transaction would have a market value of two times such exercise price.

We may redeem the Rights at a price of $0.01 per Right at any time until the earlier of (i) 10 days following the date that any Acquiring Person becomes the beneficial owner of 15% or more of the outstanding Common Stock and (ii) the date the Rights expire. In addition, at any time after a person becomes an Acquiring Person or is determined to be an Adverse Person and prior to such person becoming (together with such person's affiliates and associates) the beneficial owner of 50% or more of the outstanding Common Stock, at the election of our Board of Directors, the outstanding Rights (other than those beneficially owned by an Acquiring Person, Adverse Person or an affiliate or associate of an Acquiring Person or Adverse Person) may be exchanged, in whole or in part, for shares of Common Stock, or shares of preferred stock of the Company having essentially the same value or economic rights as such shares.

Stock Repurchase Program

On May 2, 2011, our Board of Directors authorized our stock repurchase program pursuant to which a total of $300 million of our outstanding common stock could be repurchased. On March 8, 2012, our Board of Directors approved a $323.7 million increase to our stock repurchase program.

Subject to the approval of our Board of Directors, we may repurchase our common stock under our stock repurchase program from time to time in privately negotiated transactions, through accelerated stock repurchase programs or open market transactions, including pursuant to a trading plan in accordance with Rules 10b5-1 and 10b-18 of the Securities Exchange Act of 1934. The timing of any repurchases and the actual number of shares of stock repurchased will depend on a variety of factors, including the stock price, corporate and regulatory requirements, restrictions under the Company’s debt obligations, and other market and economic conditions. Our stock repurchase program may be suspended or discontinued at any time.

During the year ended December 31, 2012, we repurchased 2.1 million shares of our common stock for aggregate consideration of $50.0 million under our stock repurchase program. During the year ended December 31, 2013, we repurchased 2.7 million shares of our common stock for aggregate consideration of $70.0 million under our stock repurchase program. The remaining authorization under our stock repurchase program as of December 31, 2013 was $280.0 million.