Benefit Plans (Tables)

6 Months Ended

Aug. 03, 2013

Pension and Other Postretirement Benefit Expense [Abstract]

Schedule of Net Periodic Benefit Costs

The actuarially determined components of the net periodic benefit cost are as follows:

	13 Weeks Ended						26 Weeks Ended
	August 3, 2013			July 28, 2012			August 3, 2013			July 28, 2012
	(millions)
Pension Plan
Service cost	$	28		$	30		$	56		$	58
Interest cost	35			39			71			78
Expected return on assets	(61		)	(63		)	(121		)	(126		)
Recognition of net actuarial loss	36			36			71			71
Amortization of prior service credit	—			—			—			—
	$	38		$	42		$	77		$	81
Supplementary Retirement Plan
Service cost	$	1		$	1		$	3		$	3
Interest cost	8			9			16			17
Recognition of net actuarial loss	6			5			10			9
Amortization of prior service credit	—			—			—			—
	$	15		$	15		$	29		$	29
Postretirement Obligations
Service cost	$	—		$	—		$	—		$	—
Interest cost	2			3			5			6
Recognition of net actuarial gain	(1		)	(1		)	(2		)	(2		)
Amortization of prior service cost	—			—			—			—
	$	1		$	2		$	3		$	4