Employee Benefit Plans Net Periodic Benefit Costs Weighted Average Assumptions (Details)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Expected Return on Plan Assets	7.50%	7.50%	7.50%
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.50%	5.00%	6.00%
Rate of Increase in compensation	2.75%	2.75%	3.50%
Excess Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of Increase in compensation	4.25%	4.25%	5.00%
SRIP [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of Increase in compensation	7.25%	7.25%	8.00%
Excess/SRIP [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.50%	5.00%	6.00%
Japan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	1.25%	1.50%	1.75%
Rate of Increase in compensation	1.00%	1.00%	1.25%
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.50%	5.25%	6.25%