Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Oct. 28, 2012	Oct. 30, 2011
Assets:
Total	$ 2,046	$ 6,815
Fair Value, Measurements, Recurring [Member]
Liabilities
Deferred Compensation	7	0
Total	7	0
Fair Value, Measurements, Recurring [Member] | Money market funds [Member]
Assets:
Investment securities	483	5,663
Fair Value, Measurements, Recurring [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	374	185
Fair Value, Measurements, Recurring [Member] | Non-US government securities [Member]
Assets:
Investment securities	29	40
Fair Value, Measurements, Recurring [Member] | Municipal securities [Member]
Assets:
Investment securities	431	373
Fair Value, Measurements, Recurring [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	384	218
Fair Value, Measurements, Recurring [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	298	309
Fair Value, Measurements, Recurring [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	47	27
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Assets:
Total	658	5,799
Liabilities
Deferred Compensation	7	0
Total	7	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Money market funds [Member]
Assets:
Investment securities	483	5,663
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	128	109
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Non-US government securities [Member]
Assets:
Investment securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Municipal securities [Member]
Assets:
Investment securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	47	27
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Assets:
Total	1,388	1,016
Liabilities
Deferred Compensation	0	0
Total	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Money market funds [Member]
Assets:
Investment securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. Treasury and agency securities [Member]
Assets:
Investment securities	246	76
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Non-US government securities [Member]
Assets:
Investment securities	29	40
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Municipal securities [Member]
Assets:
Investment securities	431	373
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Assets:
Investment securities	384	218
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed and mortgage-backed securities [Member]
Assets:
Investment securities	298	309
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Publicly traded equity securities [Member]
Assets:
Investment securities	$ 0	$ 0