What the information shows
Many companies operate multiple businesses, so looking at company-wide totals alone can make it difficult to tell which businesses are contributing to profit. Segment information addresses this by disclosing revenue, profit, and other figures broken down by business or region, making it possible to check this kind of breakdown.
Points to watch when reading it
Checking the trend in revenue and profit for each segment can reveal which businesses are growing or which have declining profitability — patterns that are not always visible from company-wide figures alone.