Benefit Plans (Tables)

6 Months Ended

Aug. 01, 2015

Pension and Other Postretirement Benefit Expense [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						26 Weeks Ended
	August 1, 2015			August 2, 2014			August 1, 2015			August 2, 2014
	(millions)
401(k) Defined Contribution Plan	$	24		$	25		$	47		$	50
Pension Plan
Service cost	$	1		$	1		$	3		$	3
Interest cost	34			37			68			75
Expected return on assets	(58		)	(62		)	(117		)	(123		)
Recognition of net actuarial loss	9			7			19			13
Amortization of prior service credit	—			—			—			—
	$	(14	)	$	(17	)	$	(27	)	$	(32	)
Supplementary Retirement Plan
Service cost	$	—		$	—		$	—		$	—
Interest cost	8			9			16			17
Recognition of net actuarial loss	2			1			5			2
Amortization of prior service cost	—			—			—			—
	$	10		$	10		$	21		$	19
Total Retirement Expense	$	20		$	18		$	41		$	37
Postretirement Obligations
Service cost	$	—		$	—		$	—		$	—
Interest cost	2			2			4			4
Recognition of net actuarial gain	—			(1		)	—			(2		)
Amortization of prior service cost	—			—			—			—
	$	2		$	1		$	4		$	2