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Subsequent Events:	9 Months Ended
Subsequent Events:	Sep. 30, 2013
Subsequent Events:
Subsequent Events:	14. Subsequent Events: On October 29, 2013, the company announced that the Board of Directors approved a quarterly dividend of $0.95 per common share. The dividend is payable December 10, 2013 to shareholders of record on November 8, 2013. On October 29, 2013, the company announced that the Board of Directors authorized $15.0 billion in additional funds for use in the company’s stock repurchase program.