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Intangible Assets (Narratives) (Details)
$ in Millions
Jun. 30, 2016
USD ($)
Acquired intangible assets  
Finite-Lived Intangible Assets [Line Items]  
Estimated annual amortization expense in 2016 $ 160
Estimated annual amortization expense in 2017 150
Estimated annual amortization expense in 2018 140
Estimated annual amortization expense in 2019 140
Estimated annual amortization expense in 2020 120
Capitalized and purchased software  
Finite-Lived Intangible Assets [Line Items]  
Estimated annual amortization expense in 2016 $ 130