Fair Value Measurements (Details) - Recurring fair value measurements - USD ($) $ in Millions	Jan. 29, 2017	Oct. 30, 2016
Assets:
Investment securities	$ 3,670	$ 3,505
Money market funds
Assets:
Investment securities	1,533	1,889
U.S. Treasury and agency securities
Assets:
Investment securities	152	205
Non-U.S. government securities
Assets:
Investment securities	66	15
Municipal securities
Assets:
Investment securities	769	661
Commercial paper, corporate bonds and medium-term notes
Assets:
Investment securities	814	415
Asset-backed and mortgage-backed securities
Assets:
Investment securities	264	253
Publicly traded equity securities
Assets:
Investment securities	72	67
Level 1
Assets:
Investment securities	1,688	2,063
Level 1 | Money market funds
Assets:
Investment securities	1,533	1,889
Level 1 | U.S. Treasury and agency securities
Assets:
Investment securities	83	107
Level 1 | Non-U.S. government securities
Assets:
Investment securities	0	0
Level 1 | Municipal securities
Assets:
Investment securities	0	0
Level 1 | Commercial paper, corporate bonds and medium-term notes
Assets:
Investment securities	0	0
Level 1 | Asset-backed and mortgage-backed securities
Assets:
Investment securities	0	0
Level 1 | Publicly traded equity securities
Assets:
Investment securities	72	67
Level 2
Assets:
Investment securities	1,982	1,442
Level 2 | Money market funds
Assets:
Investment securities	0	0
Level 2 | U.S. Treasury and agency securities
Assets:
Investment securities	69	98
Level 2 | Non-U.S. government securities
Assets:
Investment securities	66	15
Level 2 | Municipal securities
Assets:
Investment securities	769	661
Level 2 | Commercial paper, corporate bonds and medium-term notes
Assets:
Investment securities	814	415
Level 2 | Asset-backed and mortgage-backed securities
Assets:
Investment securities	264	253
Level 2 | Publicly traded equity securities
Assets:
Investment securities	$ 0	$ 0