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Common Stock
9 Months Ended
Sep. 30, 2015
Equity [Abstract]  
Common Stock
Common Stock
During the first nine months of 2015, the Company repurchased approximately 23.4 million shares of its common stock for consideration of $1.3 billion. In May 2015, the Board of Directors renewed the Company's share repurchase program, allowing management to buy back up to $2 billion of the Company's common stock. At September 30, 2015, the Company remains authorized to purchase additional shares of its common stock up to a value of approximately $1.2 billion. There is no time limit on the authorization. During the first nine months of 2014, the Company repurchased 11.8 million shares of its common stock for consideration of $600 million.