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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 333	$ 177
Change in net unrealized (losses) gains on available-for-sale securities:
Net unrealized gains (losses) arising during the period	2	2
(Gains) losses reclassified into earnings	(3)	(3)
Change in net unrealized gains (losses) on available-for-sale securities	(1)	(1)
Change in net unrealized gains (losses) on cash flow hedges:
Net unrealized gains (losses) arising during the period	75	34
Net (gains) losses reclassified into earnings	(69)	(133)
Change in net unrealized gains (losses) on cash flow hedges	6	(99)
Change in unrealized components of defined benefit plans:
Net unrealized gains (losses) arising during the period	17	(55)
Amortization of net actuarial loss and prior service benefit	61	52
Curtailments, settlements and other	0	5
Change in unrealized components of defined benefit plans	78	2
Change in cumulative translation adjustment	(4)	12
Other comprehensive income (loss) before taxes	79	(86)
(Provision) benefit for taxes	(9)	10
Other comprehensive income (loss), net of taxes	70	(76)
Comprehensive income	$ 403	$ 101

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