Stockholders' Equity (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Stockholders' Equity
Repurchases of common stock (in shares)	27	36	48	56
Payment in connection with repurchases of shares	$ 831,000,000	$ 797,000,000	$ 1,396,000,000	$ 1,050,000,000
Share repurchases that are expected to settle in the third quarter of 2014	1.7
Share repurchase authorization remaining			6,200,000,000
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive (loss) income, net of taxes	(162,000,000)	150,000,000	(51,000,000)	37,000,000
Amounts reclassified from accumulated other comprehensive income			261,000,000
Other comprehensive loss before reclassifications			(312,000,000)
Net revenue	27,309,000,000	27,582,000,000	55,463,000,000	55,941,000,000
Cost of products	(13,464,000,000)	(13,241,000,000)	(27,989,000,000)	(27,272,000,000)
Interest and other, net	(174,000,000)	(193,000,000)	(337,000,000)	(372,000,000)
Total	101,000,000	(24,000,000)	210,000,000	40,000,000
Unrealized (losses) gains on available-for-sale securities
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive (loss) income, net of taxes	(2,000,000)	14,000,000	(3,000,000)	(16,000,000)
Amounts reclassified from accumulated other comprehensive income			(1,000,000)
Other comprehensive income (loss), Tax expense (benefit)	2,000,000	5,000,000	1,000,000	38,000,000
Other comprehensive loss before reclassifications	(2,000,000)	14,000,000	(2,000,000)	(16,000,000)
Unrealized (losses) gains on available-for-sale securities | Reclassifications of losses (gains) into earnings
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income			(1,000,000)
Other comprehensive income (loss), Tax expense (benefit)	0	0	0	0
Unrealized (losses) gains on cash flow hedges
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive (loss) income, net of taxes	(162,000,000)	98,000,000	(57,000,000)	(67,000,000)
Amounts reclassified from accumulated other comprehensive income			147,000,000
Other comprehensive income (loss), Tax expense (benefit)	(75,000,000)	42,000,000	(35,000,000)	(60,000,000)
Other comprehensive loss before reclassifications	(234,000,000)	112,000,000	(204,000,000)	(100,000,000)
Unrealized (losses) gains on cash flow hedges | Reclassifications of losses (gains) into earnings
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income	72,000,000	(14,000,000)	147,000,000	33,000,000
Other comprehensive income (loss), Tax expense (benefit)	(29,000,000)	10,000,000	(63,000,000)	(7,000,000)
Net revenue	63,000,000	(46,000,000)	126,000,000	10,000,000
Cost of products	21,000,000	27,000,000	44,000,000	30,000,000
Other operating expenses	3,000,000	(4,000,000)	7,000,000	(5,000,000)
Interest and other, net	14,000,000	(1,000,000)	33,000,000	5,000,000
Total	101,000,000	(24,000,000)	210,000,000	40,000,000
Unrealized components of defined benefit plans
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive (loss) income, net of taxes	7,000,000	66,000,000	58,000,000	156,000,000
Amounts reclassified from accumulated other comprehensive income			115,000,000
Other comprehensive loss before reclassifications			(57,000,000)
(Losses) gains arising during the period
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive income (loss), Tax expense (benefit)	(21,000,000)	0	(21,000,000)	0
Other comprehensive loss before reclassifications	(90,000,000)	1,000,000	(90,000,000)	1,000,000
Amortization of actuarial loss and prior service benefit | Reclassifications of losses (gains) into earnings
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income	64,000,000	65,000,000	115,000,000	143,000,000
Other comprehensive income (loss), Tax expense (benefit)	(2,000,000)	(16,000,000)	(14,000,000)	(21,000,000)
Curtailments, settlements and other
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive (loss) income, net of taxes	33,000,000		33,000,000	12,000,000
Other comprehensive income (loss), Tax expense (benefit)	7,000,000	0	7,000,000	1,000,000
Cumulative translation adjustment
Reclassifications and Taxes related to Items of Other Comprehensive Income (Loss)
Other comprehensive (loss) income, net of taxes	(5,000,000)	(28,000,000)	(49,000,000)	(36,000,000)
Other comprehensive income (loss), Tax expense (benefit)	(12,000,000)	(4,000,000)	8,000,000	(22,000,000)
Other comprehensive loss before reclassifications			$ (49,000,000)