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PENSION AND OTHER POSTRETIREMENT BENEFITS - Other (Details) - USD ($)
$ in Millions
 12 Months Ended
Nov. 30, 2021
Oct. 31, 2021
Nov. 01, 2020
Amounts Recognized in Balance Sheet      
Noncurrent asset   $ 3,601 $ 863
Employer Contributions      
Defined benefit plan employer contributions   258 951
Pensions      
Amounts Recognized in Balance Sheet      
Noncurrent asset   3,601 863
Current liability   (51) (72)
Noncurrent liability   (885) (1,238)
Funded (unfunded) status   2,665 (447)
Amounts Recognized in Accumulated Other Comprehensive Income - Pretax      
Net actuarial loss   1,376 4,475
Prior service cost (credit)   9 21
Total   1,385 4,496
Accumulated Benefit Obligations - Additional Disclosures      
Accumulated benefit obligation for pension plans   13,787 14,257
Accumulated Benefit Obligations in Excess of Plan Assets      
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets, accumulated benefit obligations   2,012 2,107
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets, plan assets   1,207 1,100
Projected Pension Benefit Obligations in Excess of Plan Assets      
Defined benefit plan, pension plans with projected benefit obligations in excess of plan assets, projected benefit obligations   2,163 10,792
Defined benefit plan, pension plans with projected benefit obligations in excess of plan assets, plan assets   1,227 9,482
Employer Contributions      
Defined benefit plan employer contributions   101 108
Expected future employer contributions towards defined benefit plans   100  
Benefits Expected to be Paid from the Benefit Plans, which Reflect Expected Future Years of Service      
Defined benefit plan, expected future benefit payments, next twelve months   730  
Defined benefit plan, expected future benefit payments, year two   710  
Defined benefit plan, expected future benefit payments, year three   701  
Defined benefit plan, expected future benefit payments, year four   693  
Defined benefit plan, expected future benefit payments, year five   698  
Defined benefit plan, expected future benefit payments, five fiscal years thereafter   3,426  
OPEB      
Amounts Recognized in Balance Sheet      
Current liability   (36) (36)
Noncurrent liability   (3,139) (3,856)
Funded (unfunded) status   (3,175) (3,892)
Amounts Recognized in Accumulated Other Comprehensive Income - Pretax      
Net actuarial loss   49 747
Prior service cost (credit)   (20) (24)
Total   29 723
Employer Contributions      
Defined benefit plan employer contributions   157 843
Defined benefit plan employer voluntary contributions     $ 700
Expected future employer contributions towards defined benefit plans   1,150  
Benefits Expected to be Paid from the Benefit Plans, which Reflect Expected Future Years of Service      
Defined benefit plan, expected future benefit payments, next twelve months   280  
Defined benefit plan, expected future benefit payments, year two   279  
Defined benefit plan, expected future benefit payments, year three   279  
Defined benefit plan, expected future benefit payments, year four   278  
Defined benefit plan, expected future benefit payments, year five   278  
Defined benefit plan, expected future benefit payments, five fiscal years thereafter   $ 1,374  
OPEB | United States | Subsequent Event      
Employer Contributions      
Defined benefit plan employer voluntary contributions $ 1,000