Restructuring Initiatives (Tables)

9 Months Ended

Oct. 31, 2015

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Costs

Restructuring Costs	October 31, 2015
(millions)	Three Months Ended		Nine Months Ended
Severance	$	19	$	127
Pension and other	2		8
Total	$	21	$	135

Schedule of Restructuring-Related Liabilities

Accruals for restructuring costs are included in other current liabilities.

Restructuring-Related Liabilities (millions)	Severance			Pension and Other			Total
Restructuring liability as of January 31, 2015	$	—		$	—		$	—
Charges during period	127			8			135
Paid or otherwise settled	(113		)	(8		)	(121		)
Restructuring liability as of October 31, 2015	$	14		$	—		$	14