This excerpt taken from the NDAQ 10-K filed Feb 27, 2009.
Long-Lived Assets and Related Impairment
In accordance with SFAS No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets, or SFAS 144, we assess potential impairments to our long-lived assets, including finite-lived intangible assets and property and equipment, when there is evidence that events or changes in circumstances indicate that the carrying amount of an asset may not be recovered. An impairment loss is recognized when the carrying amount of the long-lived asset is not recoverable and exceeds its fair value. The carrying amount of a long-lived asset is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. Any required impairment loss is measured as the amount by which the carrying amount of a long-lived asset exceeds its fair value and is recorded as a reduction in the carrying value of the related asset and a charge to operating results. In the third quarter of 2008, we recorded an impairment loss of finite-lived intangible assets of $7.3 million primarily related to our insurance agency business, which is part of Corporate Services within our Issuer Services segment. This charge was included in asset impairment charges within other income (expense), net in the Consolidated Statements of Income. See Note 4, Goodwill and Purchased Intangible Assets, for further discussion. In 2006, we recorded write-downs for property and equipment of $5.9 million related to the sale of a building and related assets located in Trumbull, Connecticut. The carrying value of the building and related assets were adjusted to their fair market value less costs to sell, which were determined based on quoted market prices from independent third parties. This charge was also included in asset impairment charges within other income (expense), net in the Consolidated Statements of Income in 2006. No other impairments of long-lived assets were recorded in 2008, 2007 or 2006.