Supplemental Guarantor Information (Level 4 Senior Note table) (Details) - USD ($) $ in Thousands	Jul. 31, 2015	Oct. 31, 2014
Supplemental Guarantor Information (Textual) [Abstract]
Senior notes	$ 2,356,068	$ 2,655,044
Senior Notes Due 2017 [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	400,000
Senior notes	$ 400,000
Interest rate on notes	8.91%
Senior Notes Due 2018 [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	$ 350,000
Senior notes	$ 350,000
Interest rate on notes	4.00%
Senior Notes Due 2019 [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	$ 250,000
Senior notes	$ 250,000
Interest rate on notes	6.75%
Senior Notes Due 2022 [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	$ 419,876
Senior notes	$ 419,876
Interest rate on notes	5.875%
Senior Notes Due 2023 [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	$ 400,000
Senior notes	$ 400,000
Interest rate on notes	4.375%
Senior Notes Due 2024 [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	$ 250,000
Senior notes	$ 250,000
Interest rate on notes	5.625%
Senior Notes Due Two Thousand Thirty-Two [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Issued Senior Notes	$ 287,500
Senior notes	$ 287,500
Interest rate on notes	0.50%