Benefit Plans (Tables)

9 Months Ended

Oct. 28, 2017

Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]

Schedule of Costs of Retirement Plans

The defined contribution plan expense and actuarially determined components of the net periodic benefit cost (income) associated with the defined benefit plans are as follows:

	13 Weeks Ended						39 Weeks Ended
	October 28, 2017			October 29, 2016			October 28, 2017			October 29, 2016
	(millions)						(millions)
401(k) Qualified Defined Contribution Plan	$	20		$	22		$	65		$	71
Non-Qualified Defined Contribution Plan	$	—		$	—		$	—		$	1
Pension Plan
Service cost	$	1		$	1		$	4		$	3
Interest cost	25			27			79			83
Expected return on assets	(55		)	(56		)	(168		)	(170		)
Recognition of net actuarial loss	8			7			24			22
Amortization of prior service credit	—			—			—			—
	$	(21	)	$	(21	)	$	(61	)	$	(62	)
Supplementary Retirement Plan
Service cost	$	—		$	—		$	—		$	—
Interest cost	5			5			16			17
Recognition of net actuarial loss	2			3			6			7
Amortization of prior service cost	—			—			—			—
	$	7		$	8		$	22		$	24
Total Retirement Expense	$	6		$	9		$	26		$	34
Postretirement Obligations
Service cost	$	—		$	—		$	—		$	—
Interest cost	1			1			4			4
Recognition of net actuarial gain	(2		)	(1		)	(4		)	(3		)
Amortization of prior service cost	—			—			—			—
	$	(1	)	$	—		$	—		$	1