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GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
CONDENSED CONSOLIDATING STATEMENTS OF INCOME |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ 566,110 | $ 659,694 | $ 883,052 | $ 1,056,585 | $ 985,038 | $ 952,087 | $ 893,430 | $ 889,152 | $ 3,165,441 | $ 3,719,707 | $ 3,387,614
Operating costs and other |  |  |  |  |  |  |  |  | 2,489,691 | 2,664,920 | 2,430,953
Operating income from continuing operations | (16,021) | 132,780 | 227,172 | 331,819 | 263,502 | 271,912 | 255,342 | 264,031 | 675,750 | 1,054,787 | 956,661
Other income, net |  |  |  |  |  |  |  |  | 4,933 | 46,181 | 163,765
Interest expense |  |  |  |  |  |  |  |  | (15,036) | (4,654) | (6,129)
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 665,647 | 1,096,314 | 1,114,297
Income tax provision |  |  |  |  |  |  |  |  | 243,375 | 387,548 | 392,844
Income (loss) from continuing operations | (21,208) | 90,887 | 149,536 | 203,057 | 168,705 | 192,290 | 174,589 | 173,182 | 422,272 | 708,766 | 721,453
Income from discontinued operations before income taxes |  |  |  |  |  |  |  |  | (124) | 2,758 | 14,701
Income tax provision (benefit) |  |  |  |  |  |  |  |  | (77) | 2,805 | (485)
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  | (47) | (47) | 15,186
NET INCOME (LOSS) | $ (21,214) | $ 90,860 | $ 149,537 | $ 203,042 | $ 168,688 | $ 192,279 | $ 174,570 | $ 173,182 | 422,225 | 708,719 | 736,639
Eliminations |  |  |  |  |  |  |  |  |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF INCOME |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | (75) | (152) | (67)
Operating costs and other |  |  |  |  |  |  |  |  | (3,104) | (4,300) | (1,310)
Operating income from continuing operations |  |  |  |  |  |  |  |  | 3,029 | 4,148 | 1,243
Other income, net |  |  |  |  |  |  |  |  | (3,029) | (4,148) | (1,288)
Interest expense |  |  |  |  |  |  |  |  |  |  | 45
Equity in net income (loss) of subsidiaries |  |  |  |  |  |  |  |  | (417,933) | (719,825) | (778,465)
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (417,933) | (719,825) | (778,465)
Income (loss) from continuing operations |  |  |  |  |  |  |  |  | (417,933) | (719,825) | (778,465)
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (417,933) | (719,825) | (778,465)
Guarantor/Parent | Reportable Legal Entities |  |  |  |  |  |  |  |  |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF INCOME |  |  |  |  |  |  |  |  |  |  |
Operating costs and other |  |  |  |  |  |  |  |  | 10,875 | 10,763 | 12,775
Operating income from continuing operations |  |  |  |  |  |  |  |  | (10,875) | (10,763) | (12,775)
Other income, net |  |  |  |  |  |  |  |  |  | 57 | 20
Other income, net |  |  |  |  |  |  |  |  | (91) |  |
Interest expense |  |  |  |  |  |  |  |  | (159) | (42) | (83)
Equity in net income (loss) of subsidiaries |  |  |  |  |  |  |  |  | 429,140 | 715,157 | 745,105
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 418,015 | 704,409 | 732,267
Income tax provision |  |  |  |  |  |  |  |  | (4,210) | (4,310) | (4,372)
Income (loss) from continuing operations |  |  |  |  |  |  |  |  | 422,225 | 708,719 | 736,639
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | 422,225 | 708,719 | 736,639
Issuer Subsidiary | Reportable Legal Entities |  |  |  |  |  |  |  |  |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF INCOME |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 2,735,864 | 3,325,039 | 2,998,299
Operating costs and other |  |  |  |  |  |  |  |  | 2,037,464 | 2,291,775 | 2,063,737
Operating income from continuing operations |  |  |  |  |  |  |  |  | 698,400 | 1,033,264 | 934,562
Other income, net |  |  |  |  |  |  |  |  | 7,522 | 48,108 | 164,170
Interest expense |  |  |  |  |  |  |  |  | (8,955) | (3,049) | (4,776)
Equity in net income (loss) of subsidiaries |  |  |  |  |  |  |  |  | (11,207) | 4,668 | 33,360
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 685,760 | 1,082,991 | 1,127,316
Income tax provision |  |  |  |  |  |  |  |  | 258,660 | 370,723 | 383,881
Income (loss) from continuing operations |  |  |  |  |  |  |  |  | 427,100 | 712,268 | 743,435
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | 427,100 | 712,268 | 743,435
Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  |  |  |  |  |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF INCOME |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 429,652 | 394,820 | 389,382
Operating costs and other |  |  |  |  |  |  |  |  | 444,456 | 366,682 | 355,751
Operating income from continuing operations |  |  |  |  |  |  |  |  | (14,804) | 28,138 | 33,631
Other income, net |  |  |  |  |  |  |  |  | 531 | 2,164 | 863
Interest expense |  |  |  |  |  |  |  |  | (5,922) | (1,563) | (1,315)
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (20,195) | 28,739 | 33,179
Income tax provision |  |  |  |  |  |  |  |  | (11,075) | 21,135 | 13,335
Income (loss) from continuing operations |  |  |  |  |  |  |  |  | (9,120) | 7,604 | 19,844
Income from discontinued operations before income taxes |  |  |  |  |  |  |  |  | (124) | 2,758 | 14,701
Income tax provision (benefit) |  |  |  |  |  |  |  |  | (77) | 2,805 | (485)
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  | (47) | (47) | 15,186
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | $ (9,167) | $ 7,557 | $ 35,030

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