v3.7.0.1
Discontinued Operations - Balance sheet (Details) - USD ($)
$ in Millions
Apr. 30, 2017
Oct. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Total current assets of discontinued operations $ 0 $ 4,243
Total non-current assets of discontinued operations 0 4,923
Total current liabilities of discontinued operations 0 4,182
Total non-current liabilities of discontinued operations $ 0 4,013
Enterprise Services | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Accounts receivable   3,093
Inventory   34
Other current assets   1,116
Total current assets of discontinued operations   4,243
Property, plant and equipment   3,332
Long-term financing receivables and other non-current assets   1,591
Total non-current assets of discontinued operations   4,923
Notes payable and short-term borrowings   3
Accounts payable   933
Employee compensation and benefits   838
Taxes on earnings   55
Deferred revenue   849
Other accrued liabilities   1,504
Total current liabilities of discontinued operations   4,182
Long-term debt   392
Other non-current liabilities   3,621
Total non-current liabilities of discontinued operations   $ 4,013