Why did FASB decide it was necessary to require the reporting of both net income and comprehensive income?

FASB wants companies to report under the all-inclusive concept of net income.To improve full disclosures of items that were reported as a change to stockholders' equity and in footnote disclosures, FASB has companies report comprehensive income.Comprehensive income consists of net income and other comprehensive income.Examples of items reported as part of other comprehensive income include: 1.Unrealized increases or decreases in the market value of available-for-sale securities.
2. Any addition to pension liability associated with unrecognized prior service cost arising from plan amendments.
3. Certain gains and losses on " derivative "financial instruments.
4. Translation adjustments from converting the financial statements of a company s foreign operations into U.S. dollars