Stockholders’ Deficit - Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	$ (3,025)	$ (1,644)	$ (2,275)
Other comprehensive gains (losses) before reclassifications	(443)
(Gains) losses reclassified into earnings	(65)
Balance at end of period	(1,069)	(3,025)	(1,644)
Accumulated other comprehensive loss
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	285	(245)	(1,243)
Balance at end of period	(223)	285	(245)
Net unrealized gains on available-for-sale securities
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	6
Other comprehensive gains (losses) before reclassifications	1	(9)	4
(Gains) losses reclassified into earnings	0
Balance at end of period	7	6
Net unrealized gains (losses) on cash flow hedges
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	648
Other comprehensive gains (losses) before reclassifications	(352)	1,213	(141)
(Gains) losses reclassified into earnings	(66)	(584)	$ 226
Balance at end of period	230	648
Unrealized components of defined benefit plans
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	(323)
Other comprehensive gains (losses) before reclassifications	(115)
(Gains) losses reclassified into earnings	1
Balance at end of period	(437)	(323)
Change in cumulative translation adjustment
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	(46)
Other comprehensive gains (losses) before reclassifications	23
(Gains) losses reclassified into earnings	0
Balance at end of period	$ (23)	$ (46)