Pension And Postretirement Benefits (Tables)

9 Months Ended

Apr. 29, 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												Nine Months Ended
	Pension						Postretirement						Pension						Postretirement
	April 29, 2018			April 30, 2017			April 29, 2018			April 30, 2017			April 29, 2018			April 30, 2017			April 29, 2018			April 30, 2017
Service cost	$	6		$	6		$	1		$	—		$	18		$	19		$	1		$	1
Interest cost	19			21			1			2			56			64			5			7
Expected return on plan assets	(36		)	(36		)	—			—			(108		)	(108		)	—			—
Amortization of prior service credit	—			—			(7		)	(5		)	—			—			(20		)	(18		)
Special termination benefits	—			—			—			—			2			—			—			—
Net periodic benefit income	$	(11	)	$	(9	)	$	(5	)	$	(3	)	$	(32	)	$	(25	)	$	(14	)	$	(10	)

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												Nine Months Ended
	Pension						Postretirement						Pension						Postretirement
	April 29, 2018			April 30, 2017			April 29, 2018			April 30, 2017			April 29, 2018			April 30, 2017			April 29, 2018			April 30, 2017
Service cost	$	6		$	6		$	1		$	—		$	18		$	19		$	1		$	1
Interest cost	19			21			1			2			56			64			5			7
Expected return on plan assets	(36		)	(36		)	—			—			(108		)	(108		)	—			—
Amortization of prior service credit	—			—			(7		)	(5		)	—			—			(20		)	(18		)
Special termination benefits	—			—			—			—			2			—			—			—
Net periodic benefit income	$	(11	)	$	(9	)	$	(5	)	$	(3	)	$	(32	)	$	(25	)	$	(14	)	$	(10	)