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The following table illustrates the sensitivity to a change in the discount rate assumption related to <strong>Corning</strong>’s U.S. OPEB plans:<br />
Change in Assumption<br />
Effect on 2008<br />
Pre-Tax OPEB<br />
Expense<br />
Effective on<br />
December 31, <strong>2007</strong><br />
APBO<br />
25 basis point decrease in discount rate +$1 million +$20 million<br />
25 basis point increase in discount rate -$1 million -$20 million<br />
The above sensitivities reflect the impact of changing one assumption at a time. Note that economic factors and conditions often affect<br />
multiple assumptions simultaneously and the effects of changes in key assumptions are not necessarily linear.<br />
Revenue Recognition<br />
In certain instances, revenue recognition is based on estimates of fair value of deliverables as well as estimates of product returns,<br />
allowances, discounts, and other factors. These estimates are supported by historical data. While management believes that the<br />
estimates used are appropriate, differences in actual experience or changes in estimates may affect <strong>Corning</strong>’s future results.<br />
Stock Compensation<br />
Stock based compensation expense and disclosures are dependent on assumptions used in calculating such amounts. These<br />
assumptions include risk-free discount rates, expected term of the stock based compensation instrument granted, volatility of stock<br />
and option prices, expected time between grant date and date of exercise, attrition, performance, and other factors. These assumptions<br />
require us to exercise judgment. Our estimates of these assumptions typically are based upon our historical experience and currently<br />
available market place data. While management believes that the assumptions used are appropriate, differences in actual experience or<br />
changes in assumptions may affect <strong>Corning</strong>’s future stock based compensation expense and disclosures.<br />
NEW ACCOUNTING STANDARDS<br />
Refer to Note 1 (Summary of Significant Accounting Policies) to the consolidated financials statements.<br />
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