Comerica 2009 Annual Report Download - page 143

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries
The Corporation’s management accounting system also produces market segment results for the
Corporation’s four primary geographic markets: Midwest, Western, Texas, and Florida. In addition to the four
primary geographic markets, Other Markets and International are also reported as market segments. Market
segment results are provided as supplemental information to the business segment results and may not meet all
operating segment criteria as set forth in ASC Topic 280, Segment Reporting. The following discussion provides
information about the activities of each market segment. A discussion of the financial results and the factors
impacting 2008 performance can be found in the section entitled ‘‘Geographic Market Segments’’ in the financial
review.
The Midwest market consists of operations located in the states of Michigan, Ohio and Illinois. Currently,
Michigan operations represent the significant majority of this geographic market.
The Western market consists of the states of California, Arizona, Nevada, Colorado and Washington.
Currently, California operations represent the significant majority of the Western market.
The Texas and Florida markets consist of operations located in the states of Texas and Florida, respectively.
Other Markets include businesses with a national perspective, the Corporation’s investment management
and trust alliance businesses as well as activities in all other markets in which the Corporation has operations,
except for the International market, as described below.
The International market represents the activity of the Corporation’s International Finance division, which
provides banking services primarily to foreign-owned, North American-based companies and secondarily to
international operations of North American-based companies.
The Finance & Other Businesses segment includes the Corporation’s securities portfolio, asset and liability
management activities, discontinued operations, the income and expense impact of equity and cash not assigned
to specific business/market segments, tax benefits not assigned to specific business/market segments and
miscellaneous other expenses of a corporate nature. This segment includes responsibility for managing the
Corporation’s funding, liquidity and capital needs, performing interest sensitivity analysis and executing various
strategies to manage the Corporation’s exposure to liquidity, interest rate risk and foreign exchange risk.
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