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Divestitures (Details) - USD ($)
$ in Millions
3 Months Ended
Jul. 18, 2017
Sep. 30, 2017
Aug. 01, 2017
Distribution Solutions      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Cash proceeds from sale of equity method investment $ 42    
Pre-tax gain recorded on sale of investment   $ 43  
After-tax gain recorded on sale of investment   26  
Enterprise Information Solutions | Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Consideration to be received upon sell of EIS business     $ 185
Assets   243  
Goodwill balance   124  
Liabilities   $ 190