Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Jul. 27, 2014	Oct. 27, 2013
Total [Member]
Assets:
Foreign exchange derivative assets	$ 11	$ 20
Total	3,021	2,229
Total [Member] | Money market funds [Member]
Assets:
Investment securities	1,978	1,095
Total [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	72	170
Total [Member] | Non-US government securities [Member]
Assets:
Investment securities	15	11
Total [Member] | Municipal securities [Member]
Assets:
Investment securities	395	386
Total [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	229	219
Total [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	271	268
Total [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	50	60
Level 1 [Member]
Assets:
Foreign exchange derivative assets	0	0
Total	2,070	1,221
Level 1 [Member] | Money market funds [Member]
Assets:
Investment securities	1,978	1,095
Level 1 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	42	66
Level 1 [Member] | Non-US government securities [Member]
Assets:
Investment securities	0	0
Level 1 [Member] | Municipal securities [Member]
Assets:
Investment securities	0	0
Level 1 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	0	0
Level 1 [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	0	0
Level 1 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	50	60
Level 2 [Member]
Assets:
Foreign exchange derivative assets	11	20
Total	951	1,008
Level 2 [Member] | Money market funds [Member]
Assets:
Investment securities	0	0
Level 2 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	30	104
Level 2 [Member] | Non-US government securities [Member]
Assets:
Investment securities	15	11
Level 2 [Member] | Municipal securities [Member]
Assets:
Investment securities	395	386
Level 2 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	229	219
Level 2 [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	271	268
Level 2 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	$ 0	$ 0