This excerpt taken from the PNC 10-K filed Mar 2, 2009.
Goodwill and Other Intangible Assets
The sum of goodwill and other intangible assets increased $5.5 billion at December 31, 2007 compared with the prior year end, to $9.6 billion. We added $4.7 billion of goodwill and other intangible assets in connection with the Mercantile acquisition. In addition, our acquisitions of ARCS, Yardville and Albridge collectively added $.9 billion of goodwill and other intangible assets during 2007.