Share Repurchases	3 Months Ended
Mar. 31, 2013
Share Repurchases	Note 11: Share Repurchases In 2011, our Board of Directors authorized a share repurchase program, which allows us to purchase up to $150.0 million of our common stock through open market repurchases, negotiated transactions, or other means, in accordance with applicable securities laws and other restrictions. The program does not have an expiration date and may be suspended at any time at the discretion of the Company. In 2012, our Board of Directors authorized an extension of the share repurchase program, which allows us to purchase up to an additional $200.0 million of our common stock through open market repurchases, negotiated transactions, or other means, in accordance with applicable securities laws and other restrictions. This program is funded by cash on hand and cash flows from operating activities. For the three months ended March 31, 2013, we repurchased 0.6 million shares of our common stock under the program through prepaid variable share repurchase agreements for an aggregate cost of $31.3 million and an average price per share of $50.98. From inception of the program to March 31, 2013, we have repurchased 4.3 million shares of our common stock under the programs for an aggregate cost of $156.3 million and an average price of $36.17.

Share Repurchases

3 Months Ended

Mar. 31, 2013

Note 11: Share Repurchases

In 2011, our Board of Directors authorized a share repurchase program, which allows us to purchase up to $150.0 million of our common stock through open market repurchases, negotiated transactions, or other means, in accordance with applicable securities laws and other restrictions. The program does not have an expiration date and may be suspended at any time at the discretion of the Company. In 2012, our Board of Directors authorized an extension of the share repurchase program, which allows us to purchase up to an additional $200.0 million of our common stock through open market repurchases, negotiated transactions, or other means, in accordance with applicable securities laws and other restrictions. This program is funded by cash on hand and cash flows from operating activities.

For the three months ended March 31, 2013, we repurchased 0.6 million shares of our common stock under the program through prepaid variable share repurchase agreements for an aggregate cost of $31.3 million and an average price per share of $50.98. From inception of the program to March 31, 2013, we have repurchased 4.3 million shares of our common stock under the programs for an aggregate cost of $156.3 million and an average price of $36.17.