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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (By Fair Value Hierarchy) (Details) - USD ($) $ in Millions	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2017
UNITED STATES | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 722	$ 615	$ 575
Other assets	0	0
UNITED STATES | Pension Plan [Member] | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	110	14
UNITED STATES | Pension Plan [Member] | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	443	428
UNITED STATES | Pension Plan [Member] | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	169	173
UNITED STATES | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	133	144
UNITED STATES | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	124	130
UNITED STATES | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	9	14
UNITED STATES | Pension Plan [Member] | Significant Other Observable Inputs (Level 2)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	211	116
UNITED STATES | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	110	14
UNITED STATES | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	1	1
UNITED STATES | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	100	101
UNITED STATES | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Cash and cash equivalents at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Equity at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	318	297
UNITED STATES | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Fixed Income securities at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	60	58
UNITED STATES | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Total assets at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	378	355
UNITED STATES | Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	175	176	172
Other assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	4	5
UNITED STATES | Other Postretirement Benefits Plan [Member] | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	123	121
UNITED STATES | Other Postretirement Benefits Plan [Member] | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	48	50
UNITED STATES | Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	37	41
UNITED STATES | Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	34	37
UNITED STATES | Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	3	4
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Other Observable Inputs (Level 2)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	32	34
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	4	5
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Other Observable Inputs (Level 2) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Other Observable Inputs (Level 2) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	28	29
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Cash and cash equivalents at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
UNITED STATES | Other Postretirement Benefits Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Equity at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	89	84
UNITED STATES | Other Postretirement Benefits Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Fixed Income securities at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	17	17
UNITED STATES | Other Postretirement Benefits Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Total assets at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	106	101
Foreign Plan [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	1,545	1,538	1,392
Other assets	311	297
Foreign Plan [Member] | Pension Plan [Member] | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	452	659
Foreign Plan [Member] | Pension Plan [Member] | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	1,093	879
Foreign Plan [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	150	153
Foreign Plan [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	150	153
Foreign Plan [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	221	202
Foreign Plan [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	221	202
Foreign Plan [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0	$ 3
Foreign Plan [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Cash and cash equivalents at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Foreign Plan [Member] | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Equity at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	302	506
Foreign Plan [Member] | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Fixed Income securities at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	872	677
Foreign Plan [Member] | Pension Plan [Member] | Fair Value Measured at Net Asset Value Per Share | Total assets at NAV [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 1,174	$ 1,183

X

- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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