Cash, Cash Equivalents and Investments (Details) (USD $) In Millions, unless otherwise specified	Apr. 28, 2013		Oct. 28, 2012
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	$ 2,816		$ 2,967
Cash, Cash Equivalents and Investments Gross Unrealized Gains	35		25
Cash, Cash Equivalents and Investments Gross Unrealized Losses	1		0
Cash, Cash Equivalents and Investments Estimated Fair Value	2,850		2,992
Total cash and cash equivalents [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	1,545		1,392
Cash, Cash Equivalents and Investments Gross Unrealized Gains	0		0
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	1,545		1,392
Cash [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	590		876
Cash, Cash Equivalents and Investments Gross Unrealized Gains	0		0
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	590		876
Cash equivalents [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	955		516
Cash, Cash Equivalents and Investments Gross Unrealized Gains	0		0
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	955		516
Cash equivalents [Member] | Money market funds [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	955		483
Cash, Cash Equivalents and Investments Gross Unrealized Gains	0		0
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	955		483
Cash equivalents [Member] | Municipal securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost			33
Cash, Cash Equivalents and Investments Gross Unrealized Gains			0
Cash, Cash Equivalents and Investments Gross Unrealized Losses			0
Cash, Cash Equivalents and Investments Estimated Fair Value			33
Short-term and long-term investments [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	1,271		1,575
Cash, Cash Equivalents and Investments Gross Unrealized Gains	35		25
Cash, Cash Equivalents and Investments Gross Unrealized Losses	1		0
Cash, Cash Equivalents and Investments Estimated Fair Value	1,305		1,600
Short-term and long-term investments [Member] | Total fixed income securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	1,167		1,473
Cash, Cash Equivalents and Investments Gross Unrealized Gains	9		10
Cash, Cash Equivalents and Investments Gross Unrealized Losses	1		0
Cash, Cash Equivalents and Investments Estimated Fair Value	1,175		1,483
Short-term and long-term investments [Member] | U.S. Treasury and agency securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	217		373
Cash, Cash Equivalents and Investments Gross Unrealized Gains	1		1
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	218		374
Short-term and long-term investments [Member] | Non-US government securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	14	[1]	29
Cash, Cash Equivalents and Investments Gross Unrealized Gains	0	[1]	0
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0	[1]	0
Cash, Cash Equivalents and Investments Estimated Fair Value	14	[1]	29
Short-term and long-term investments [Member] | Municipal securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	385		396
Cash, Cash Equivalents and Investments Gross Unrealized Gains	2		2
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	387		398
Short-term and long-term investments [Member] | Commercial paper, corporate bonds and medium-term notes [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	262		381
Cash, Cash Equivalents and Investments Gross Unrealized Gains	3		3
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	265		384
Short-term and long-term investments [Member] | Asset-backed and mortgage-backed securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	289		294
Cash, Cash Equivalents and Investments Gross Unrealized Gains	3		4
Cash, Cash Equivalents and Investments Gross Unrealized Losses	1		0
Cash, Cash Equivalents and Investments Estimated Fair Value	291		298
Short-term and long-term investments [Member] | Publicly traded equity securities [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	31		32
Cash, Cash Equivalents and Investments Gross Unrealized Gains	26		15
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	57		47
Short-term and long-term investments [Member] | Equity investments in privately-held companies [Member]
Summary of Cash, Cash Equivalents and Investments
Cash, Cash Equivalents and Investments Cost	73		70
Cash, Cash Equivalents and Investments Gross Unrealized Gains	0		0
Cash, Cash Equivalents and Investments Gross Unrealized Losses	0		0
Cash, Cash Equivalents and Investments Estimated Fair Value	$ 73		$ 70

[1] Includes agency and corporate debt securities guaranteed by non-U.S. governments, which consist of Canada, Germany and Australia.