(Tables)

6 Months Ended

Apr. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended April 30,												Six Months Ended April 30,
	Pension Benefits						Health and Life Insurance Benefits						Pension Benefits						Health and Life Insurance Benefits
(in millions)	2016			2015			2016			2015			2016			2015			2016			2015
Service cost for benefits earned during the period	$	3		$	3		$	2		$	2		$	5		$	6		$	3		$	3
Interest on obligation	29			35			15			18			59			71			30			36
Amortization of cumulative loss	26			24			8			9			52			49			16			19
Amortization of prior service benefit	—			—			(1		)	(1		)	—			—			(1		)	(2		)
Contractual termination benefits	2			(1		)	—			(1		)	2			(1		)	—			(1		)
Premiums on pension insurance	4			4			—			—			8			5			—			—
Expected return on assets	(42		)	(48		)	(7		)	(8		)	(84		)	(97		)	(13		)	(15		)
Net periodic benefit expense	$	22		$	17		$	17		$	19		$	42		$	33		$	35		$	40