Fair Value Measurements (Tables)

6 Months Ended

Jul. 31, 2013

Fair Value Disclosures [Abstract]

Notional Amounts And Fair Values Of Interest Rate Swaps

As of July 31, 2013 and January 31, 2013, the notional amounts and fair values of these derivatives are as follows:

	July 31, 2013					January 31, 2013
(Amounts in millions)	Notional Amount		Fair Value			Notional Amount		Fair Value
Receive fixed-rate, pay variable-rate interest rate swaps designated as fair value hedges	$	1,000	$	16		$	3,445	$	60
Receive fixed-rate, pay fixed-rate cross-currency interest rate swaps designated as net investment hedges	1,250		192			1,250		223
Receive fixed-rate, pay fixed-rate cross-currency interest rate swaps designated as cash flow hedges	2,851		326			2,944		230
Receive variable-rate, pay fixed-rate interest rate swaps designated as cash flow hedges	990		(2		)	1,056		(8		)
Receive variable-rate, pay fixed-rate forward starting interest rate swaps designated as cash flow hedges	2,500		214			5,000		10
Total	$	8,591	$	746		$	13,695	$	515

Other Fair Value Disclosure [Table Text Block]

The carrying value and fair value of the Company's long-term debt as of July 31, 2013 and January 31, 2013, are as follows: 

	July 31, 2013				January 31, 2013
(Amounts in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt, including amounts due within one year	$	45,370	$	50,185	$	43,981	$	50,664