Discontinued Operation

12 Months Ended

Dec. 31, 2011

Discontinued Operation Disclosure [Abstract]

Discontinued Operation

Discontinued Operation

In December 2006, we entered into a definitive agreement to sell our traffic control business to HTS Acquisition, Inc. (“HTS”), an entity formed by affiliates of private equity investors Wynnchurch Capital Partners and Oak Hill Special Opportunities Fund, L.P. The transaction closed in February 2007 and we received net proceeds of $66. The results of operations of our traffic control business are reported within discontinued operation in the consolidated statements of income.

As part of the sale, we retained financial responsibility for deductibles and self-insured retentions associated with casualty insurance programs (workers’ compensation, automobile liability and general liability) covering the traffic control business with respect to claims arising from loss occurrences prior to closing. These liabilities were not assumed by the purchaser. We are not liable for these types of liabilities for the traffic control business to the extent they arise subsequent to closing. The aggregate amount of these retained insurance liabilities as of December 31, 2011 and 2010 was $8 and $12, respectively, and is included in accrued expenses and other liabilities and other long-term liabilities in the consolidated balance sheets. The 2010 and 2009 after-tax losses of $4 and $2, respectively, which are reflected in loss from discontinued operation, net of taxes in the accompanying consolidated statements of income, relate to changes in estimates for these retained insurance liabilities. 2011 results include a loss of less than $1 related to these retained liabilities.