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Warranty, Guarantees and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jan. 25, 2015
Jan. 26, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning balance $ 113us-gaap_StandardProductWarrantyAccrual $ 102us-gaap_StandardProductWarrantyAccrual
Provisions for warranty 36us-gaap_StandardProductWarrantyAccrualWarrantiesIssued 27us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
Consumption of reserves (30)us-gaap_StandardProductWarrantyAccrualPayments (23)us-gaap_StandardProductWarrantyAccrualPayments
Ending balance $ 119us-gaap_StandardProductWarrantyAccrual $ 106us-gaap_StandardProductWarrantyAccrual