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GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | $ 753,597 | $ 1,428,574 | $ 1,129,082
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (257,169) | (1,131,445) | (951,536)
Purchase of short-term investments | (57,276) | (45,607) |
Proceeds from sale of short-term investments | 58,381 |  |
Proceeds from asset sales | 21,845 | 22,643 | 30,176
Proceeds from sale of investments |  |  | 49,205
Net cash used in investing activities | (234,219) | (1,154,409) | (872,155)
FINANCING ACTIVITIES: |  |  |
Payments on long-term debt | (40,000) | (40,000) | (115,000)
Proceeds from senior notes, net of discount |  | 497,125 |
Debt issuance costs | (1,111) | (5,474) |
Proceeds on short-term debt |  | 1,002 |
Payments on short-term debt |  | (1,002) |
Repurchase of common stock |  | (59,654) |
Dividends paid | (300,152) | (298,367) | (264,386)
Exercise of stock options, net of tax withholding | 1,040 | 2,650 | 23,250
Tax withholdings related to net share settlements of restricted stock | (3,912) | (5,140) | (3,049)
Excess tax benefit from stock-based compensation | 934 | 3,772 | 26,616
Net cash provided by (used in) financing activities | (343,201) | 94,912 | (332,569)
Net increase (decrease) in cash and cash equivalents | 176,177 | 369,077 | (75,642)
Cash and cash equivalents, beginning of period | 729,384 | 360,307 | 435,949
Cash and cash equivalents, end of period | 905,561 | 729,384 | 360,307
Guarantor/Parent | Reportable Legal Entities |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | 3,521 | 3,623 | (21,094)
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (16,119) | (24,818) | (17,786)
Intercompany transfers | 16,119 | 24,818 | 17,786
Proceeds from asset sales | 9 | 1 | 2
Net cash used in investing activities | 9 | 1 | 2
FINANCING ACTIVITIES: |  |  |
Repurchase of common stock |  | (59,654) |
Intercompany transfers | 300,152 | 358,021 | 264,386
Dividends paid | (300,152) | (298,367) | (264,386)
Exercise of stock options, net of tax withholding | 1,040 | 2,650 | 23,250
Tax withholdings related to net share settlements of restricted stock | (3,912) | (5,140) | (3,049)
Excess tax benefit from stock-based compensation | (775) | 78 | (957)
Net cash provided by (used in) financing activities | (3,647) | (2,412) | 19,244
Net increase (decrease) in cash and cash equivalents | (117) | 1,212 | (1,848)
Cash and cash equivalents, beginning of period | (838) | (2,050) | (202)
Cash and cash equivalents, end of period | (955) | (838) | (2,050)
Issuer Subsidiary | Reportable Legal Entities |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | 776,364 | 1,379,707 | 1,050,609
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (235,078) | (1,064,288) | (840,341)
Purchase of short-term investments | (57,276) | (45,607) |
Proceeds from sale of short-term investments | 58,381 |  |
Intercompany transfers | (16,119) | (24,818) | (17,786)
Proceeds from asset sales | 19,237 | 21,329 | 27,401
Proceeds from sale of investments |  |  | 49,205
Net cash used in investing activities | (230,855) | (1,113,384) | (781,521)
FINANCING ACTIVITIES: |  |  |
Payments on long-term debt | (40,000) | (40,000) | (115,000)
Proceeds from senior notes, net of discount |  | 497,125 |
Debt issuance costs | (1,111) | (5,474) |
Intercompany transfers | (300,152) | (358,021) | (264,386)
Excess tax benefit from stock-based compensation | 1,509 | 3,665 | 27,357
Net cash provided by (used in) financing activities | (339,754) | 97,295 | (352,029)
Net increase (decrease) in cash and cash equivalents | 205,755 | 363,618 | (82,941)
Cash and cash equivalents, beginning of period | 693,273 | 329,655 | 412,596
Cash and cash equivalents, end of period | 899,028 | 693,273 | 329,655
Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | (26,288) | 45,244 | 99,567
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (5,972) | (42,339) | (93,409)
Proceeds from asset sales | 2,599 | 1,313 | 2,773
Net cash used in investing activities | (3,373) | (41,026) | (90,636)
FINANCING ACTIVITIES: |  |  |
Proceeds on short-term debt |  | 1,002 |
Payments on short-term debt |  | (1,002) |
Excess tax benefit from stock-based compensation | 200 | 29 | 216
Net cash provided by (used in) financing activities | 200 | 29 | 216
Net increase (decrease) in cash and cash equivalents | (29,461) | 4,247 | 9,147
Cash and cash equivalents, beginning of period | 36,949 | 32,702 | 23,555
Cash and cash equivalents, end of period | $ 7,488 | $ 36,949 | $ 32,702

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