Fair Value Measurements (Tables)

6 Months Ended

Apr. 30, 2017

Fair Value Disclosures [Abstract]

Financial assets measured at fair value on a recurring basis

Financial assets (excluding cash balances) measured at fair value on a recurring basis are summarized below:

	April 30, 2017						October 30, 2016
	Level 1		Level 2		Total		Level 1		Level 2		Total
	(In millions)
Assets:
Money market funds	$	2,637	$	—	$	2,637	$	1,889	$	—	$	1,889
U.S. Treasury and agency securities	58		477		535		107		98		205
Non-U.S. government securities	—		162		162		—		15		15
Municipal securities	—		1,041		1,041		—		661		661
Commercial paper, corporate bonds and medium-term notes	—		1,687		1,687		—		415		415
Asset-backed and mortgage-backed securities	—		293		293		—		253		253
Publicly traded equity securities	87		—		87		67		—		67
Total	$	2,782	$	3,660	$	6,442	$	2,063	$	1,442	$	3,505