11 . borrowings short-term borrowings the carrying value of short-term borrowings at december 31 , 2012 and 2011 , included $ 100 million under the 2012 revolving credit facility and $ 100 million under the 2011 revolving credit facility , respectively . 2012 revolving credit facility . in march 2011 , the company entered into a five-year $ 3.5 billion unsecured revolving credit facility ( the 201c2011 credit facility 201d )