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Note 9 - Senior Secured, Senior, Senior Exchangeable, Senior Amortizing and Senior Subordinated Notes (Detail) - Senior Secured, Senior and Senior Subordinated Notes (Parentheticals)
Oct. 31, 2012
Senior Amortizing Notes [Member]
Oct. 31, 2012
Senior Exchangeable Notes [Member]
Oct. 31, 2012
Tangible Equity Units [Member]
Oct. 31, 2011
Tangible Equity Units [Member]
Oct. 02, 2012
10.625% Senior Secured Notes Due 2016 [Member]
Oct. 31, 2011
10.625% Senior Secured Notes Due 2016 [Member]
May 31, 2011
10.625% Senior Secured Notes Due 2016 [Member]
May 04, 2011
10.625% Senior Secured Notes Due 2016 [Member]
Oct. 20, 2009
10.625% Senior Secured Notes Due 2016 [Member]
Dec. 03, 2008
10.625% Senior Secured Notes Due 2016 [Member]
May 27, 2008
10.625% Senior Secured Notes Due 2016 [Member]
Oct. 31, 2012
7.25% Senior Secured First Lien Notes due October 15, 2020 [Member]
Oct. 31, 2012
9.125% Senior Secured Second Lien Notes due November 15, 2020 [Member]
Oct. 31, 2012
2.0% Senior Secured Notes due November 1, 2021 [Member]
Oct. 31, 2012
5.0% Senior Secured Notes due November 1, 2021 [Member]
Oct. 31, 2012
6.5% Senior Notes Due 2014 [Member]
Oct. 31, 2011
6.5% Senior Notes Due 2014 [Member]
Jan. 31, 2010
6.5% Senior Notes Due 2014 [Member]
Nov. 03, 2003
6.5% Senior Notes Due 2014 [Member]
Oct. 31, 2012
6.375% Senior Notes Due 2014 [Member]
Oct. 31, 2011
6.375% Senior Notes Due 2014 [Member]
Jan. 31, 2010
6.375% Senior Notes Due 2014 [Member]
Mar. 18, 2004
6.375% Senior Notes Due 2014 [Member]
Oct. 31, 2012
6.25% Senior Notes Due 2015 [Member]
Oct. 31, 2011
6.25% Senior Notes Due 2015 [Member]
Jan. 31, 2010
6.25% Senior Notes Due 2015 [Member]
Nov. 30, 2004
6.25% Senior Notes Due 2015 [Member]
Oct. 31, 2012
11.875% Senior Notes Due 2015 [Member]
Oct. 31, 2011
11.875% Senior Notes Due 2015 [Member]
Oct. 30, 2011
11.875% Senior Notes Due 2015 [Member]
Feb. 14, 2011
11.875% Senior Notes Due 2015 [Member]
Feb. 09, 2011
11.875% Senior Notes Due 2015 [Member]
Oct. 31, 2012
6.25% Senior Notes Due 2016 [Member]
Oct. 02, 2012
6.25% Senior Notes Due 2016 [Member]
Oct. 31, 2011
6.25% Senior Notes Due 2016 [Member]
Aug. 08, 2005
6.25% Senior Notes Due 2016 [Member]
Oct. 31, 2012
7.5% Senior Notes Due 2016 [Member]
Oct. 31, 2011
7.5% Senior Notes Due 2016 [Member]
Feb. 27, 2006
7.5% Senior Notes Due 2016 [Member]
Oct. 31, 2012
8.625% Senior Notes Due 2017 [Member]
Oct. 31, 2011
8.625% Senior Notes Due 2017 [Member]
Jun. 12, 2006
8.625% Senior Notes Due 2017 [Member]
Stated Interest Rate 11.00% 6.00% 7.25% 7.25% 10.625% 10.625% 10.625% 10.625% 10.625% 10.625% 10.625% 7.25% 9.125% 2.00% 5.00% 6.50% 6.50% 6.50% 6.50% 6.375% 6.375% 6.375% 6.375% 6.25% 6.25% 6.25% 6.25% 11.875% 11.875% 11.875% 11.875% 11.875% 6.25% 10.625% 6.25% 6.25% 7.50% 7.50% 7.50% 8.625% 8.625% 8.625%