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Note 23 (Detail) - Condensed Consolidating Financial Statements - Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Net income (loss) $ (9,990) $ (16,463)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities (5,930) (23,403)
Net cash (used in) provided by operating activities (15,920) (39,866)
Net cash (used in) investing activities 17,674 (2,104)
Net cash (used in) provided by financing activities (30,124) (1,753)
Net (decrease) increase in cash (28,370) (43,723)
Cash and cash equivalents balance, beginning of period 273,232 250,740
Cash and cash equivalents balance, end of period 244,862 207,017
Parent Company [Member]
    
Net income (loss) (9,990) (16,463)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities 14,384 14,463
Net cash (used in) provided by operating activities 4,394 (2,000)
Net cash (used in) provided by financing activities   47,147
Intercompany investing and financing activities – net (4,394) (45,147)
Subsidiary Issuer [Member]
    
Net income (loss) (812,119) 73,676
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities 773,776 (46,947)
Net cash (used in) provided by operating activities (38,343) 26,729
Net cash (used in) investing activities 242 (1,121)
Net cash (used in) provided by financing activities (2,169) (91,885)
Intercompany investing and financing activities – net 28,338 52,388
Net (decrease) increase in cash (11,932) (13,889)
Cash and cash equivalents balance, beginning of period 197,097 112,122
Cash and cash equivalents balance, end of period 185,165 98,233
Guarantor Subsidiaries [Member]
    
Net income (loss) 758,315 (55,930)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities (773,952) 28,283
Net cash (used in) provided by operating activities (15,637) (27,647)
Net cash (used in) investing activities 12,033 (1,011)
Net cash (used in) provided by financing activities 20,087 25,585
Intercompany investing and financing activities – net (17,970) 5,352
Net (decrease) increase in cash (1,487) 2,279
Cash and cash equivalents balance, beginning of period (2,017) (4,989)
Cash and cash equivalents balance, end of period (3,504) (2,710)
Non-Guarantor Subsidiaries [Member]
    
Net income (loss) 21,971 8,462
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities 11,695 (45,410)
Net cash (used in) provided by operating activities 33,666 (36,948)
Net cash (used in) investing activities 5,399 28
Net cash (used in) provided by financing activities (48,042) 17,400
Intercompany investing and financing activities – net (5,974) (12,593)
Net (decrease) increase in cash (14,951) (32,113)
Cash and cash equivalents balance, beginning of period 78,152 143,607
Cash and cash equivalents balance, end of period 63,201 111,494
Consolidation, Eliminations [Member]
    
Net income (loss) 31,833 (26,208)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities $ (31,833) $ 26,208