Long-Term Debt (Tables)

3 Months Ended

Feb. 29, 2012

Short-Term Borrowings/Long-Term Debt [Abstract]

Summary of long-term debt carrying values including unamortized discounts and premiums

	February 29, 2012		November 30, 2011
Unsecured Long-Term Debt
7.75% Senior Notes, due 2012 (effective interest rate of 8.08%)(1)	$	253,269	$	254,926
5.875% Senior Notes, due 2014 (effective interest rate of 6.00%)		249,363		249,298
3.875% Senior Notes, due 2015 (effective interest rate of 3.92%)		499,235		499,187
5.5% Senior Notes, due 2016 (effective interest rate of 5.57%)		349,095		349,045
5.125% Senior Notes, due 2018 (effective interest rate of 5.18%)		768,133		782,598
8.5% Senior Notes, due 2019 (effective interest rate of 8.31%)		707,593		707,787
6.875% Senior Notes, due 2021 (effective interest rate of 6.99%)		545,895		545,816
6.45% Senior Debentures, due 2027 (effective interest rate of 6.55%)		346,695		346,664
3.875% Convertible Senior Debentures, due, 2029 (effective interest rate of 7.20%)		283,994		280,832
6.25% Senior Debentures, due 2036 (effective interest rate of 6.37%)		492,805		492,773
	$	4,496,077	$	4,508,926
Secured Long-Term Debt
Credit facility, due 2014		250,000		100,000
	$	4,746,077	$	4,608,926

(1) Subsequent to quarter end, our 7.75% Senior Notes matured on March 15, 2012 and were repaid.