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Percentage of Ownership

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The type of noncash consideration received (for example, debt, stock, etc.) Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Dispositions (Narrative) (Details) $ in Millions			1 Months Ended		3 Months Ended
Dispositions (Narrative) (Details) $ in Millions	Jul. 24, 2015 USD ($)	Jul. 17, 2015	Feb. 28, 2015 USD ($)	Jan. 30, 2015 USD ($)	Jul. 03, 2015 USD ($)	Oct. 31, 2014 USD ($)	Aug. 01, 2014 USD ($)	Oct. 31, 2013 MW
Emergency Management Consulting
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from divestures						$ 19
Other Disposals
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets							$ 12
Cloudshield Technologies
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from divestures			$ 5
Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of ownership								100.00%
Capacity of power plant \| MW								37.5
Discontinued Operations, Held-for-sale [Member] \| Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets					$ 29
Discontinued Operations, Held-for-sale [Member] \| Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sales of Business, Affiliate and Productive Assets	$ 29
Discontinued Operations, Held-for-sale [Member] \| Subsequent Event \| Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration, Note Receivable		73.0
Disposal Group, Including Discontinued Operation, Contingent Consideration, Maximum Earn-out Payment	30
Disposal Group, Including Discontinued Operation, Consideration	$ 101
Health and Engineering \| Discontinued Operations, Held-for-sale [Member] \| Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets				$ 40
Fixed Asset and Inventory [Member] \| Other Disposals
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets							$ 9