text: At December 31, 2004, we had 10 million shares available for repurchase under a 
  July 2004 authorization. We received $136 million, $36 million and $46 million in 
  proceeds from the exercise of employee stock options in the years ended 
  December 31, 2004, 2003 and 2002, respectively. 
  
  **Principal Debt Arrangements**
  Our long-term debt consists of publicly held senior and subordinated notes and 
  bank credit facilities. We pay fixed rates of interest ranging from 5.875% to 9.75% 
  on the senior and subordinated notes. We pay variable interest based on LIBOR on 
  our bank credit facility. We amended our bank credit facility in November 2003, 
  and our current senior credit facility is a $2.5 billion, five-year revolving credit 
  facility with a syndicate of banks led by Bank of America, N.A. As of December 31, 
  2004, we had approximately $2.4 billion of available liquidity under our bank 
  credit facility. Subsequent to year-end, we redeemed three issuances of senior notes 
  totaling $676 million of principal utilizing available funds under the bank credit 
  facility. Our next maturity of public debt is not due until 2006. 