Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Oct. 27, 2013	Oct. 28, 2012
Total [Member]
Assets:
Investment securities	$ 2,229	$ 2,050
Total [Member] | Money market funds [Member]
Assets:
Investment securities	1,095	483
Total [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	170	374
Total [Member] | Non-U.S. government securities [Member]
Assets:
Investment securities	11	29
Total [Member] | Municipal securities [Member]
Assets:
Investment securities	386	431
Total [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	219	384
Total [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	268	298
Total [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	60	47
Total [Member] | Foreign exchange derivative assets [Member]
Assets:
Investment securities	20	4
Level 1 [Member]
Assets:
Investment securities	1,221	658
Level 1 [Member] | Money market funds [Member]
Assets:
Investment securities	1,095	483
Level 1 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	66	128
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	60	47
Level 1 [Member] | Foreign exchange derivative assets [Member]
Assets:
Investment securities	0	0
Level 2 [Member]
Assets:
Investment securities	1,008	1,392
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	104	246
Level 2 [Member] | Non-U.S. government securities [Member]
Assets:
Investment securities	11	29
Level 2 [Member] | Municipal securities [Member]
Assets:
Investment securities	386	431
Level 2 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	219	384
Level 2 [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	268	298
Level 2 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	0	0
Level 2 [Member] | Foreign exchange derivative assets [Member]
Assets:
Investment securities	$ 20	$ 4