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Common and Preferred Stock	12 Months Ended
Common and Preferred Stock	Dec. 31, 2014
Equity [Abstract]
Common and Preferred Stock	Common and Preferred Stock On November 6, 2014 the Company’s Board of Directors approved an increase in the authorized level for repurchases of common stock by $400.0 million. Repurchases under the program will be funded with future cash flow generation and cash available under the Revolving Facility. During 2014 the Company purchased a total of 3.0 million shares at a cost of $222.5 million compared to 2.9 million shares purchased at a cost of $167.5 million in 2013. As of December 31, 2014, there was $545 million of repurchase authorization remaining. At December 31, 2014 and 2013 the Company had 150 million shares of authorized common stock, with a par value of $.01 per share and five million shares of authorized preferred stock with a par value of $.01 per share. No preferred stock was issued as of December 31, 2014 and 2013.