Fair Value Measurements (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	May 01, 2011	May 02, 2010	May 01, 2011	May 02, 2010	Oct. 31, 2010
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	$ 4,050		$ 4,050		$ 3,138
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		(1)
Impairment charges
Equity investments in privately-held companies measured at fair value on a non-recurring basis	13	16	13	16	19
Impairment of equity method investment in privately-held companies measured at fair value on a non-recurring basis	0	4	0	5
Fair Value Measurements (Textuals) [Abstract]
Equity investments in privately-held companies	59	68	59	68	59
Investments accounted for under cost method of accounting	46	52	46	52	40
Investments measured at fair value on a non-recurring basis	13	16	13	16	19
Long-term debt at carrying value	205		205		205
Estimated fair value of long-term debt	242		242		238
Level 1 [Member]
Impairment charges
Equity investments in privately-held companies measured at fair value on a non-recurring basis	0	0	0	0
Fair Value Measurements (Textuals) [Abstract]
Investments measured at fair value on a non-recurring basis	0	0	0	0
Level 1 [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	1,863		1,863		1,317
Level 1 [Member] | Money market funds [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	1,746		1,746		1,139
Level 1 [Member] | US Treasury and agency securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	84		84		153
Level 1 [Member] | U.S. commercial paper, corporate bonds and medium-term notes [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 1 [Member] | Obligations of states and political subdivisions [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 1 [Member] | Other debt securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 1 [Member] | Publicly traded equity securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	33		33		25
Level 1 [Member] | Foreign Exchange [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 1 [Member]
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		0
Level 1 [Member] | Foreign Exchange [Member]
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		0
Level 2 [Member]
Impairment charges
Equity investments in privately-held companies measured at fair value on a non-recurring basis	0	0	0	0
Fair Value Measurements (Textuals) [Abstract]
Investments measured at fair value on a non-recurring basis	0	0	0	0
Level 2 [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	2,187		2,187		1,821
Level 2 [Member] | Money market funds [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 2 [Member] | US Treasury and agency securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	612		612		520
Level 2 [Member] | U.S. commercial paper, corporate bonds and medium-term notes [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	629		629		509
Level 2 [Member] | Obligations of states and political subdivisions [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	534		534		523
Level 2 [Member] | Other debt securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	402		402		263
Level 2 [Member] | Publicly traded equity securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0	[1]
Level 2 [Member] | Foreign Exchange [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	10		10		6
Level 2 [Member]
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		(1)
Level 2 [Member] | Foreign Exchange [Member]
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		(1)
Level 3 [Member]
Impairment charges
Equity investments in privately-held companies measured at fair value on a non-recurring basis	13	16	13	16
Fair Value Measurements (Textuals) [Abstract]
Investments measured at fair value on a non-recurring basis	13	16	13	16
Level 3 [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | Money market funds [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | US Treasury and agency securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | U.S. commercial paper, corporate bonds and medium-term notes [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | Obligations of states and political subdivisions [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | Other debt securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | Publicly traded equity securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | Foreign Exchange [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member]
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		0
Level 3 [Member] | Foreign Exchange [Member]
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	0		0		0
Money market funds [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	1,746		1,746		1,139
US Treasury and agency securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	696		696		673
U.S. commercial paper, corporate bonds and medium-term notes [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	629		629		509
Obligations of states and political subdivisions [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	534		534		523
Other debt securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	402		402		263
Publicly traded equity securities [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	33		33		25
Foreign Exchange [Member]
ASSETS
Financial Assets Measured at Fair Value on a Recurring Basis	10		10		6
Liabilities
Financial Liabilities Measured at Fair Value on a Recurring Basis	$ 0		$ 0		$ (1)

[1] Amounts as of May 1, 2011 are unaudited. Amounts as of October 31, 2010 are derived from the October 31, 2010 audited consolidated financial statements.