It is great that Denise Coyne has recognized the potential business value of improved data quality. 

I do hope that this sentiment is not being driven by vendors/consultants pushing the purchase of a product (first) and a long implementation (second) followed by a realization that data requirements gathering is a necessity (third) and then a need for data governance practices (last, but really should be first)

As the CIO, she, of all people, should be aware of the potential complexity of migrating a federated, distributed organization with many organically-developed business applications (and probably thousands, if not tens of thousands of desktop data assets such as spreadsheets and databases) into "one source of truth." The "truth" is that it is highly unlikely that there is one source of truth. Rather, a reasonable focus on data governance and master data management would begin with understanding what business decisions are dependent on consolidated data, who in the organization is hampered by delays in serving reports based on consolidated data, and what steps can be taken to alleviate the negative business impacts. We have seen a number of initiatives focused on "single source of truth" evolve into data governance and data quality management programs when the delivery on the promises of the MDM tool vendors are impeded by the inability to simultaneously transform the organization via good information management practices.

Best of luck!