Consideration for acquisitions that qualify as business combinations includes the cash paid and the value of any options assumed, less any cash acquired, and excludes contingent employee compensation payable in cash and any debt assumed. During 2008, we completed two acquisitions qualifying as business combinations in exchange for aggregate net cash consideration of $16 million, plus certain liabilities. We allocated all of this consideration to goodwill. See "Note 13: Goodwill" for the goodwill allocation by reportable operating segment.

During 2007, we completed one acquisition qualifying as a business combination in exchange for net cash consideration of $76 million, plus certain liabilities. We allocated a substantial majority of this consideration to goodwill. The acquired business and related goodwill was recorded within the all other category for segment reporting purposes. During 2006, we did not complete any acquisitions qualifying as business combinations.