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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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A valuation allowance for receivables due to an Entity for more than one year from the balance sheet date that are expected to be uncollectible.

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Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

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Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract.

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The cash inflow associated with the proceeds from sale and collection of receivables during the period.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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Receivables (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Nov. 01, 2013	Jan. 30, 2015	Jan. 31, 2014	Jan. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed Contracts Receivable		$ 655us-gaap_BilledContractReceivables	$ 794us-gaap_BilledContractReceivables
Unbilled Contracts Receivable		230us-gaap_UnbilledContractsReceivable	288us-gaap_UnbilledContractsReceivable
Accounts receivable, gross		21us-gaap_ContractReceivableRetainage	15us-gaap_ContractReceivableRetainage
Allowance for Doubtful Accounts Receivable, Current		10	15
Accounts receivable, net		896us-gaap_AccountsReceivableNetCurrent	1,082us-gaap_AccountsReceivableNetCurrent
Bad debt expense	42us-gaap_ProvisionForDoubtfulAccounts	5us-gaap_ProvisionForDoubtfulAccounts	44us-gaap_ProvisionForDoubtfulAccounts	2us-gaap_ProvisionForDoubtfulAccounts
Proceeds from sale of receivables			105
One Customer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts		(7)
Accounts receivable, net, noncurrent		18
Number of projects		1
Proceeds from sale of receivables		21
Two Customers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of projects			2
Bad debt expense			$ 41