Postretirement Benefits (Tables)

6 Months Ended

Apr. 30, 2015

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)	2015			2014			2015			2014			2015			2014			2015			2014
Service cost for benefits earned during the period	$	3		$	2		$	2		$	1		$	6		$	6		$	3		$	2
Interest on obligation	35			40			18			17			71			79			36			34
Amortization of cumulative loss	24			23			9			4			49			47			19			8
Amortization of prior service benefit	—			—			(1		)	(1		)	—			—			(2		)	(2		)
Contractual termination benefits	(1		)	—			(1		)	—			(1		)	—			(1		)	—
Premiums on pension insurance	4			—			—			—			5			—			—			—
Expected return on assets	(48		)	(48		)	(8		)	(8		)	(97		)	(96		)	(15		)	(16		)
Net postretirement benefits expense	$	17		$	17		$	19		$	13		$	33		$	36		$	40		$	26