Pension And Postretirement Benefits (Tables)

6 Months Ended

Jan. 28, 2018

Pension Plan, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

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

	Three Months Ended												Six Months Ended
	Pension						Postretirement						Pension						Postretirement
	January 28, 2018			January 29, 2017			January 28, 2018			January 29, 2017			January 28, 2018			January 29, 2017			January 28, 2018			January 29, 2017
Service cost	$	6		$	7		$	—		$	1		$	12		$	13		$	—		$	1
Interest cost	18			21			2			2			37			43			4			5
Expected return on plan assets	(36		)	(36		)	—			—			(72		)	(72		)	—			—
Amortization of prior service credit	—			—			(6		)	(7		)	—			—			(13		)	(13		)
Special termination benefits	2			—			—			—			2			—			—			—
Net periodic benefit income	$	(10	)	$	(8	)	$	(4	)	$	(4	)	$	(21	)	$	(16	)	$	(9	)	$	(7	)

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 expense (income) were as follows:

	Three Months Ended												Six Months Ended
	Pension						Postretirement						Pension						Postretirement
	January 28, 2018			January 29, 2017			January 28, 2018			January 29, 2017			January 28, 2018			January 29, 2017			January 28, 2018			January 29, 2017
Service cost	$	6		$	7		$	—		$	1		$	12		$	13		$	—		$	1
Interest cost	18			21			2			2			37			43			4			5
Expected return on plan assets	(36		)	(36		)	—			—			(72		)	(72		)	—			—
Amortization of prior service credit	—			—			(6		)	(7		)	—			—			(13		)	(13		)
Special termination benefits	2			—			—			—			2			—			—			—
Net periodic benefit income	$	(10	)	$	(8	)	$	(4	)	$	(4	)	$	(21	)	$	(16	)	$	(9	)	$	(7	)