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Acquisitions and Dispositions (Details) - Jun. 30, 2015
$ / shares in Units, $ in Billions
USD ($)
shares
$ / shares
Business Acquisition, Equity Interests Issued or Issuable [Line Items]  
Stock conversion rate 1.12
Cash Consideration per share | $ / shares $ 19.00
Total Share Consideration 490,000,000
Total cash consideration | $ $ 8.3
Senior unsecured bridge facility | $ $ 8.6