Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2011

Fair Value Measurements

Carrying Value and Fair Value of Long-term Debt


		April 30, 2011								January 31, 2011
(Amounts in millions)		Carrying Value				Fair Value				Carrying Value				Fair Value
Long-term debt, including amounts due within one year		$	48,659			$	50,717			$	45,347			$	47,012

Notional Amounts and Fair Values of Interest Rate Swaps


		April 30, 2011								January 31, 2011
(Amounts in millions)		Notional Amount				Fair Value				Notional Amount				Fair Value
Receive fixed-rate, pay floating-rate interest rate swaps designated as fair value hedges		$	3,945			$	249			$	4,445			$	267
Receive fixed-rate, pay fixed-rate cross-currency interest rate swaps designated as net investment hedges			1,250				165				1,250				233
Receive floating-rate, pay fixed-rate interest rate swaps designated as cash flow hedges			1,193				(18	)			1,182				(18	)
Receive fixed-rate, pay fixed-rate cross-currency interest rate swaps designated as cash flow hedges			3,150				241				2,902				238

Total		$	9,538			$	637			$	9,779			$	720