Retirement and Post-Retirement Benefit Plans (Tables)

6 Months Ended

Apr. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of net pension and post-retirement benefit cost

	Three months ended April 30,
	Non-U.S. Defined Benefit Plans						Post-Retirement Benefit Plans
	2017			2016			2017			2016
	In millions
Service cost	$	30		$	50		$	1		$	1
Interest cost	52			78			1			2
Expected return on plan assets	(131		)	(161		)	—			—
Amortization and deferrals:
Actuarial loss (gain)	64			54			(1		)	(1		)
Prior service benefit	(4		)	(4		)	—			—
Net periodic benefit cost	11			17			1			2
Settlement loss	3			1			—			—
Special termination benefits	1			1			—			—
Plan expense allocation	(5		)	(2		)	—			—
Net benefit cost from continuing operations	10			17			1			2
Summary of net benefit cost:
Continuing operations	10			17			1			2
Discontinued operations	35			22			—			—
Net benefit cost	$	45		$	39		$	1		$	2

	Six months ended April 30,
	Non-U.S. Defined Benefit Plans						Post-Retirement Benefit Plans
	2017			2016			2017			2016
	In millions
Service cost	$	70		$	100		$	2		$	2
Interest cost	102			158			2			4
Expected return on plan assets	(264		)	(331		)	—			(1		)
Amortization and deferrals:
Actuarial loss (gain)	140			109			(2		)	(2		)
Prior service benefit	(8		)	(9		)	—			—
Net periodic benefit cost	40			27			2			3
Settlement loss	3			1			—			—
Special termination benefits	2			3			—			—
Plan expense allocation	(15		)	(4		)	(1		)	—
Net benefit cost from continuing operations	30			27			1			3
Summary of net benefit cost:
Continuing operations	30			27			1			3
Discontinued operations	79			40			1			—
Net benefit cost	$	109		$	67		$	2		$	3