. in february 2010 , we entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 4.46% ( 4.46 % ) beginning with the interest accrued after march 18 , 2010 . we maintained a $ 1.4 billion senior credit facility with various financial institutions , including the $ 420.5 million term loan and a $ 945.5 million revolving credit facility