Senior and Subordinated Debt (Tables)

12 Months Ended

Jan. 31, 2012

Bank Revolving Credit Facility and Senior and Subordinated Debt [Abstract]

Schedule of senior and subordinated debt

The following table summarizes the Company’s senior and subordinated debt:

	January 31,
	2012		2011
	(in thousands)
Senior Notes:
3.625% Puttable Equity-Linked Senior Notes due 2011, net of discount	$	-	$	45,480
3.625% Puttable Equity-Linked Senior Notes due 2014, net of discount		199,132		198,806
7.625% Senior Notes due 2015		178,253		178,253
5.000% Convertible Senior Notes due 2016		50,000		90,000
6.500% Senior Notes due 2017		132,144		132,144
4.250% Convertible Senior Notes due 2018		350,000		-
7.375% Senior Notes due 2034		100,000		100,000
Total Senior Notes		1,009,529		744,683
Subordinated Debt:
Subordinate Tax Revenue Bonds due 2013		29,000		29,000
Total Senior and Subordinated Debt	$	1,038,529	$	773,683

Schedule of carrying amounts of the debt and equity balances

The following table summarizes the carrying amounts of the Company’s debt and equity balances related to the 2011 Senior Notes:

	January 31,
	2011
	(in thousands)
Carrying amount of equity component	$	7,484
Outstanding principal amount of the puttable equity-linked senior notes		46,891
Unamortized discount		(1,411	)
Net carrying amount of the puttable equity-linked senior notes	$	45,480

Summary of interest incurred, capitalized and paid

The following table summarizes interest incurred, capitalized and paid on all forms of indebtedness (included in Notes E, G and H).

		$0,00000			$0,00000			$0,00000
	Years Ended January 31,
	2012			2011			2010
		(in thousands)
Interest incurred	$	454,485		$	482,430		$	455,746
Interest capitalized		(193,448	)		(172,664	)		(112,887	)
Net interest expense	$	261,037		$	309,766		$	342,859
Interest incurred from discontinued operations	$	2,937		$	11,404		$	9,595
Cash paid for interest (net of amount capitalized)	$	260,822		$	318,910		$	330,309