Fair Value Measurements (Tables)

6 Months Ended

Jul. 31, 2016

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The assets and liabilities of the Company that are measured at fair value on a recurring basis as of July 31, 2016 and January 31, 2016 were as follows (amounts in millions):

	Fair Value at July 31, 2016 Using						Fair Value at January 31, 2016 Using
	Level 1		Level 2		Level 3		Level 1		Level 2			Level 3
Derivative agreements - assets	$	—	$	253	$	—	$	—	$	213		$	—
Derivative agreements - liabilities	—		—		—		—		(82		)	—
Total	$	—	$	253	$	—	$	—	$	131		$	—