Postretirement Benefits (Tables)

9 Months Ended

Jul. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended July 31,												Nine Months Ended July 31,
	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		$	3		$	2		$	2		$	9		$	9		$	5		$	4
Interest on obligation	35			39			17			17			106			118			53			51
Amortization of cumulative loss	25			23			10			4			74			70			29			12
Amortization of prior service benefit	—			—			(1		)	(1		)	—			—			(3		)	(3		)
Contractual termination benefits	—			14			—			—			(1		)	14			(1		)	—
Premiums on pension insurance	3			—			—			—			8			—			—			—
Expected return on assets	(48		)	(48		)	(7		)	(8		)	(145		)	(144		)	(22		)	(24		)
Net postretirement benefits expense	$	18		$	31		$	21		$	14		$	51		$	67		$	61		$	40