Aetna 2013 Annual Report Download - page 81

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Annual Report- Page 75
• Reducing our ability to issue short-term debt securities at attractive interest rates, thereby increasing our
interest expense and decreasing our operating results.
• Reducing our ability to issue other securities.
Although we seek, within guidelines we deem appropriate, to match the duration of our assets and liabilities and to
manage our credit exposures, a failure to adequately do so could adversely affect our net income and our financial
condition.
Our pension plan expenses are affected by general financial market conditions, interest rates and the accuracy
of actuarial estimates of future benefit costs.
We have pension plans that cover a large number of current employees and retirees. Even though our employees
stopped earning future pension service credits in the Aetna Pension Plan effective December 31, 2010, the Aetna
Pension Plan continues to operate. Therefore, unfavorable investment performance, interest rate changes or changes
in estimates of benefit costs, if significant, could adversely affect our operating results or financial condition by
significantly increasing our pension plan expense and obligations.