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Acquisitions Strategic Investments (Details) - Jun. 30, 2015 - USD ($)
$ in Millions
Total
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity $ 40
Preventis [Member]  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 27.00%
Preventice [Member]  
Schedule of Equity Method Investments [Line Items]  
Common Stock Interest Acquired 18.50%
Frankenman [Member]  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 25.00%