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STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Nov. 01, 2018
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Beginning Balance $ (408) $ (398)   $ (408)  
Impact of adoption of new guidance on tax effects in AOCI (7)     (7)  
Other comprehensive income (loss) before reclassifications   (9)   (9)  
Amounts reclassified out of accumulated other comprehensive income (loss)   7   18  
Tax expense (benefit)   (4)   (2)  
Other comprehensive income (loss)   (6) $ (25) 11 $ 11
Ending Balance (415) (404)   (404)  
Foreign Currency Translation          
Beginning Balance (214) (201)   (214)  
Impact of adoption of new guidance on tax effects in AOCI 0     0  
Other comprehensive income (loss) before reclassifications   (13)   (9)  
Amounts reclassified out of accumulated other comprehensive income (loss)   0   0  
Tax expense (benefit)   1   10  
Other comprehensive income (loss)   (12)   1  
Ending Balance (214) (213)   (213)  
Prior Service Credits          
Beginning Balance 134 134   134  
Impact of adoption of new guidance on tax effects in AOCI 3     3  
Other comprehensive income (loss) before reclassifications   0   0  
Amounts reclassified out of accumulated other comprehensive income (loss)   (2)   (6)  
Tax expense (benefit)   0   1  
Other comprehensive income (loss)   (2)   (5)  
Ending Balance 137 132   132  
Actuarial Losses          
Beginning Balance (335) (332)   (335)  
Impact of adoption of new guidance on tax effects in AOCI (9)     (9)  
Other comprehensive income (loss) before reclassifications   0   (2)  
Amounts reclassified out of accumulated other comprehensive income (loss)   10   30  
Tax expense (benefit)   (5)   (11)  
Other comprehensive income (loss)   5   17  
Ending Balance (344) (327)   (327)  
Unrealized Gains (Losses) on Derivatives          
Beginning Balance 7 1   7  
Impact of adoption of new guidance on tax effects in AOCI (1)     (1)  
Other comprehensive income (loss) before reclassifications   4   2  
Amounts reclassified out of accumulated other comprehensive income (loss)   (1)   (6)  
Tax expense (benefit)   0   2  
Other comprehensive income (loss)   3   (2)  
Ending Balance $ 6 $ 4   $ 4