Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Jul. 28, 2013	Oct. 28, 2012
Total [Member]
Assets:
Investment securities	$ 2,359	$ 2,046
Total [Member] | Money market funds [Member]
Assets:
Investment securities	1,145	483
Total [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	229	374
Total [Member] | Non-US government securities [Member]
Assets:
Investment securities	11	29
Total [Member] | Municipal securities [Member]
Assets:
Investment securities	378	431
Total [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	258	384
Total [Member] | Asset-backed Securities [Member]
Assets:
Investment securities	281	298
Total [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	57	47
Level 1 [Member]
Assets:
Investment securities	1,307	658
Level 1 [Member] | Money market funds [Member]
Assets:
Investment securities	1,145	483
Level 1 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	105	128
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 Securities [Member]
Assets:
Investment securities	0	0
Level 1 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	57	47
Level 2 [Member]
Assets:
Investment securities	1,052	1,388
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	124	246
Level 2 [Member] | Non-US government securities [Member]
Assets:
Investment securities	11	29
Level 2 [Member] | Municipal securities [Member]
Assets:
Investment securities	378	431
Level 2 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	258	384
Level 2 [Member] | Asset-backed Securities [Member]
Assets:
Investment securities	281	298
Level 2 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	$ 0	$ 0