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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Statement of Comprehensive Income [Abstract] |  |  |
Net earnings | $ 1,908 | $ 344 | $ 3,161
Change in net unrealized losses on available-for-sale securities: |  |  |
Net unrealized losses arising during the period | (3) | (8) | (4)
(Gains) losses reclassified into earnings | (9) | (4) | 3
Change in unrealized (losses) gains on available-for-sale securities | (12) | (12) | (1)
Change in net unrealized gains (losses) on cash flow hedges: |  |  |
Net unrealized gains arising during the period | 169 | 46 | 226
Net losses (gains) reclassified into earnings | 8 | (145) | (270)
Change in unrealized gains (losses) on cash flow hedges | 177 | (99) | (44)
Change in unrealized components of defined benefit plans: |  |  |
(Losses) gains arising during the period | (423) | 944 | (1,777)
Amortization of actuarial loss and prior service benefit | 191 | 285 | 284
Curtailments, settlements and other | 22 | 15 | (18)
Change in unrealized components of defined benefit plans | (210) | 1,244 | (1,511)
Cumulative translation adjustment arising during the period | (70) | (14) | (154)
Release of cumulative translation adjustment as a result of divestitures and country exits | 20 | 0 | 75
Change in foreign currency translation adjustment | (50) | (14) | (79)
Other comprehensive (loss) income before taxes | (95) | 1,119 | (1,635)
(Provision) benefit for taxes | (42) | (145) | 51
Other comprehensive (loss) income, net of taxes | (137) | 974 | (1,584)
Comprehensive income | $ 1,771 | $ 1,318 | $ 1,577

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