Fair Value Measurements (Assets Measured at Fair Value on a Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Oct. 26, 2014	Oct. 27, 2013
Assets:
Foreign exchange derivative assets	$ 52	$ 20
Total assets	3,575	2,229
Money market funds [Member]
Assets:
Investment securities	2,494	1,095
U.S. Treasury and agency securities [Member]
Assets:
Investment securities	62	170
Non-U.S. government securities [Member]
Assets:
Investment securities	14	11
Municipal securities [Member]
Assets:
Investment securities	393	386
Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	224	219
Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	286	268
Publicly traded equity securities [Member]
Assets:
Investment securities	50	60
Level 1 [Member]
Assets:
Foreign exchange derivative assets	0	0
Total assets	2,587	1,221
Level 1 [Member] | Money market funds [Member]
Assets:
Investment securities	2,494	1,095
Level 1 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	43	66
Level 1 [Member] | Non-U.S. 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	52	20
Total assets	988	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	19	104
Level 2 [Member] | Non-U.S. government securities [Member]
Assets:
Investment securities	14	11
Level 2 [Member] | Municipal securities [Member]
Assets:
Investment securities	393	386
Level 2 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	224	219
Level 2 [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	286	268
Level 2 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	$ 0	$ 0