Debt (Tables)

9 Months Ended

Oct. 31, 2011

Debt [Abstract]

Long-Term Debt Issuances

Issue Date	Maturity Date	Interest Rate	Principal Amount
April 18, 2011	April 15, 2014	1.625%		$	1,000
April 18, 2011	April 15, 2016	2.800%			1,000
April 18, 2011	April 15, 2021	4.250%			1,000
April 18, 2011	April 15, 2041	5.625%			2,000
Total				$	5,000