Notes to Consolidated Financial Statements

(Continued)

Note 17.
Additional Information:

The amounts shown below are for continuing operations.

(in millions) For the years ended December 31, 2004  2003  2002  Research and development expense $    809  $   756  $   680  Advertising expense $1,763  $1,623  $1,835  Interest and other debt   expense, net:   Interest expense $1,417  $1,367  $1,327    Interest income (241) (217) (193) $1,176  $1,150  $1,134  Interest expense of financial   services operations included   in cost of sales $    106  $   108  $    97  Rent expense $    798  $   765  $  740

Minimum rental commitments under non-cancelable operating leases in effect at December 31, 2004, were as follows:

(in millions) 2005 $    544 2006 405 2007 306 2008 208 2009 147 Thereafter 387 $ 1,997