Stockholders' Deficit - Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	$ (2,918)	$ (1,650)
Other comprehensive income (loss) before reclassifications	(514)
Reclassifications of gains into earnings	(256)
Balance at end of period	(3,730)	(2,328)
Accumulated other comprehensive (loss) income
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	313	(260)
Balance at end of period	(456)	(16)
Net unrealized gains on available-for-sale debt securities
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	6
Other comprehensive income (loss) before reclassifications	3	(2)
Reclassifications of gains into earnings	0
Balance at end of period	9
Net unrealized (losses) gains on cash flow hedges
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	648
Other comprehensive income (loss) before reclassifications	(517)	267
Reclassifications of gains into earnings	(256)	$ (32)
Balance at end of period	(125)
Unrealized components of defined benefit plans
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	(295)
Other comprehensive income (loss) before reclassifications	(29)
Reclassifications of gains into earnings	0
Balance at end of period	(323)
Change in cumulative translation adjustment
Components of accumulated other comprehensive income, net of taxes
Balance at beginning of period	(46)
Other comprehensive income (loss) before reclassifications	29
Reclassifications of gains into earnings	0
Balance at end of period	(17)
Reclassifications of settlements into earnings
Components of accumulated other comprehensive income, net of taxes
Reclassifications of gains into earnings	$ 1