Pension And Postretirement Benefits (Tables)

6 Months Ended

Jan. 29, 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												Six Months Ended
	Pension						Postretirement						Pension						Postretirement
	January 29, 2017			January 31, 2016			January 29, 2017			January 31, 2016			January 29, 2017			January 31, 2016			January 29, 2017			January 31, 2016
Service cost	$	7		$	7		$	1		$	1		$	13		$	14		$	1		$	1
Interest cost	21			25			2			4			43			50			5			8
Expected return on plan assets	(36		)	(36		)	—			—			(72		)	(75		)	—			—
Amortization of prior service credit	—			—			(7		)	(1		)	—			—			(13		)	(1		)
Recognized net actuarial (gain)/loss	—			(24		)	—			—			—			112			—			—
Net periodic benefit (income) / expense	$	(8	)	$	(28	)	$	(4	)	$	4		$	(16	)	$	101		$	(7	)	$	8

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												Six Months Ended
	Pension						Postretirement						Pension						Postretirement
	January 29, 2017			January 31, 2016			January 29, 2017			January 31, 2016			January 29, 2017			January 31, 2016			January 29, 2017			January 31, 2016
Service cost	$	7		$	7		$	1		$	1		$	13		$	14		$	1		$	1
Interest cost	21			25			2			4			43			50			5			8
Expected return on plan assets	(36		)	(36		)	—			—			(72		)	(75		)	—			—
Amortization of prior service credit	—			—			(7		)	(1		)	—			—			(13		)	(1		)
Recognized net actuarial (gain)/loss	—			(24		)	—			—			—			112			—			—
Net periodic benefit (income) / expense	$	(8	)	$	(28	)	$	(4	)	$	4		$	(16	)	$	101		$	(7	)	$	8