Pension And Postretirement Benefits (Tables)

9 Months Ended

Apr. 30, 2017

Pension Plan, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

Components of net benefit (income) / expense were as follows:

	Three Months Ended											Nine Months Ended
	Pension						Postretirement					Pension						Postretirement
	April 30, 2017			May 1, 2016			April 30, 2017			May 1, 2016		April 30, 2017			May 1, 2016			April 30, 2017			May 1, 2016
Service cost	$	6		$	6		$	—		$	—	$	19		$	20		$	1		$	1
Interest cost	21			24			2			4		64			74			7			12
Expected return on plan assets	(36		)	(36		)	—			—		(108		)	(111		)	—			—
Amortization of prior service credit	—			(1		)	(5		)	—		—			(1		)	(18		)	(1		)
Recognized net actuarial loss	—			61			—			—		—			173			—			—
Net periodic benefit (income) / expense	$	(9	)	$	54		$	(3	)	$	4	$	(25	)	$	155		$	(10	)	$	12

Other Postretirement Benefit Plans, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

Components of net benefit (income) / expense were as follows:

	Three Months Ended											Nine Months Ended
	Pension						Postretirement					Pension						Postretirement
	April 30, 2017			May 1, 2016			April 30, 2017			May 1, 2016		April 30, 2017			May 1, 2016			April 30, 2017			May 1, 2016
Service cost	$	6		$	6		$	—		$	—	$	19		$	20		$	1		$	1
Interest cost	21			24			2			4		64			74			7			12
Expected return on plan assets	(36		)	(36		)	—			—		(108		)	(111		)	—			—
Amortization of prior service credit	—			(1		)	(5		)	—		—			(1		)	(18		)	(1		)
Recognized net actuarial loss	—			61			—			—		—			173			—			—
Net periodic benefit (income) / expense	$	(9	)	$	54		$	(3	)	$	4	$	(25	)	$	155		$	(10	)	$	12