text: The Company established a commercial paper program during 2001 that provides for 
  the issuance, on a revolving basis, of up to $500 million of uncollateralized short-term 
  notes. The Company is required to maintain credit availability under its Senior Credit 
  Facility equal to the outstanding principal amount of commercial paper borrowings. 
  No commercial paper borrowings were outstanding at December 31, 2004 or 2003. 
  
  The Company attempts to limit its exposure to interest rate risk by managing the 
  mix of its long-term fixed rate borrowings and short-term borrowings under its 
  bank credit facilities. In 2003, the Company entered into three interest rate swap 
  agreements, designated as fair value hedges, which effectively converted 
  $400 million of the Company’s fixed rate debt to floating rate debt. In 2004, the 
  Company terminated interest rate swap agreements with total notional amounts of 
  $400 million and entered into additional interest rate swap agreements, designated 