This excerpt taken from the BSX 10-K filed Mar 1, 2006.
Interest Expense and Other, Net
Our interest expense increased to $90 million in 2005 from $64 million in 2004 and $46 million in 2003. The increase in 2005 as compared to 2004 related primarily to an increase in average market interest rates on our borrowings. The increase in 2004 as compared to 2003 related primarily to an increase in our average debt levels and in average market rates on our floating-rate borrowings.
Our other, net reflected income of $13 million in 2005, expense of $16 million in 2004, and expense of $8 million in 2003. Our other, net included asset write-downs of $17 million in 2005 and $58 million in 2004 associated with certain investments in and loans to privately held and publicly traded companies. We do not believe that these write-downs of assets will have a material impact on our future operations. In 2004, our other, net included realized gains of $36 million from sales of investments in privately held and publicly traded companies. In addition, our other, net included interest income of $36 million in 2005, $20 million in 2004, and $6 million in 2003. Our interest income increased in 2005 as compared to 2004 due to increases in average market interest rates. Our interest income in 2004 increased as compared to 2003 due primarily to growth in our cash balances.