Treasury Stock	6 Months Ended
Jun. 30, 2012
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Treasury Stock	Treasury Stock: The Company’s Board of Directors has authorized share repurchases under the share repurchase program up to $1 billion, exclusive of any fees, commissions, or other expenses related to such repurchases, through April 2015. The repurchases may be made from time to time on the open market or in privately negotiated transactions. The timing and amount of any shares repurchased under the program will depend on a variety of factors, including price, corporate and regulatory requirements, capital availability, and other market conditions. Repurchased shares will be held in treasury. The program may be limited or terminated at any time without prior notice. We repurchased 1,106,000 and 1,145,000 shares under the share repurchase program for a total cost of $98.4 million and $69.7 million during the second quarter of 2012 and 2011, respectively. During the first six months of 2012 and 2011, we repurchased 1,160,700 and 2,156,500 shares under the share repurchase program for a total cost of $102.5 million and $122.9 million, respectively. As of June 30, 2012, we had remaining authorization under the share repurchase program of $460.4 million exclusive of any fees, commissions, or other expenses.

Treasury Stock:

The Company’s Board of Directors has authorized share repurchases under the share repurchase program up to $1 billion, exclusive of any fees, commissions, or other expenses related to such repurchases, through April 2015. The repurchases may be made from time to time on the open market or in privately negotiated transactions. The timing and amount of any shares repurchased under the program will depend on a variety of factors, including price, corporate and regulatory requirements, capital availability, and other market conditions. Repurchased shares will be held in treasury. The program may be limited or terminated at any time without prior notice.

We repurchased 1,106,000 and 1,145,000 shares under the share repurchase program for a total cost of $98.4 million and $69.7 million during the second quarter of 2012 and 2011, respectively. During the first six months of 2012 and 2011, we repurchased 1,160,700 and 2,156,500 shares under the share repurchase program for a total cost of $102.5 million and $122.9 million, respectively. As of June 30, 2012, we had remaining authorization under the share repurchase program of $460.4 million exclusive of any fees, commissions, or other expenses.