Retirement, Pension and Other Postretirement Plans - Allocation of Pension Plan Assets (Detail) - Pension Plans [Member]	Oct. 31, 2019	Oct. 31, 2018
United States [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
International [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Equity Securities [Member] | United States [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	11.00%	13.00%
Debt Securities [Member] | United States [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	53.00%	50.00%
Insurance Contracts [Member] | International [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	54.00%	55.00%
Pooled Investment Funds [Member] | United States [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	35.00%	36.00%
Pooled Investment Funds [Member] | International [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	45.00%	44.00%
Other [Member] | United States [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	1.00%	1.00%
Other [Member] | International [Member]
Allocation of pension plan assets
Defined Benefit Plan, Actual Plan Asset Allocations	1.00%	1.00%