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GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | $ 357,217 | $ 753,597 | $ 1,428,574
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (397,567) | (257,169) | (1,131,445)
Purchase of short-term investments | (69,866) | (57,276) | (45,607)
Payment for acquisition of business, net of cash acquired | (70,416) |  |
Proceeds from sale of short-term investments | 69,449 | 58,381 |
Proceeds from asset sales | 23,412 | 21,845 | 22,643
Net cash used in investing activities | (444,988) | (234,219) | (1,154,409)
FINANCING ACTIVITIES: |  |  |
Payments on long-term debt |  | (40,000) | (40,000)
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 | (305,515) | (300,152) | (298,367)
Exercise of stock options, net of tax withholding | 10,534 | 1,040 | 2,650
Tax withholdings related to net share settlements of restricted stock | (5,848) | (3,912) | (5,140)
Excess tax benefit from stock-based compensation | 4,414 | 934 | 3,772
Net cash provided by (used in) financing activities | (296,415) | (343,201) | 94,912
Net increase (decrease) in cash and cash equivalents | (384,186) | 176,177 | 369,077
Cash and cash equivalents, beginning of period | 905,561 | 729,384 | 360,307
Cash and cash equivalents, end of period | 521,375 | 905,561 | 729,384
Guarantor/Parent | Reportable Legal Entities |  |  |
CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | (3,828) | 3,521 | 3,623
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (4,264) | (16,119) | (24,818)
Payment for acquisition of business, net of cash acquired | (70,416) |  |
Intercompany transfers | 74,680 | 16,119 | 24,818
Proceeds from asset sales |  | 9 | 1
Net cash used in investing activities |  | 9 | 1
FINANCING ACTIVITIES: |  |  |
Repurchase of common stock |  |  | (59,654)
Intercompany transfers | 305,515 | 300,152 | 358,021
Dividends paid | (305,515) | (300,152) | (298,367)
Exercise of stock options, net of tax withholding | 10,534 | 1,040 | 2,650
Tax withholdings related to net share settlements of restricted stock | (5,848) | (3,912) | (5,140)
Excess tax benefit from stock-based compensation | (490) | (775) | 78
Net cash provided by (used in) financing activities | 4,196 | (3,647) | (2,412)
Net increase (decrease) in cash and cash equivalents | 368 | (117) | 1,212
Cash and cash equivalents, beginning of period | (955) | (838) | (2,050)
Cash and cash equivalents, end of period | (587) | (955) | (838)
Issuer Subsidiary | Reportable Legal Entities |  |  |
CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | 349,929 | 776,364 | 1,379,707
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (387,392) | (235,078) | (1,064,288)
Purchase of short-term investments | (69,866) | (57,276) | (45,607)
Proceeds from sale of short-term investments | 69,449 | 58,381 |
Intercompany transfers | (74,680) | (16,119) | (24,818)
Proceeds from asset sales | 22,724 | 19,237 | 21,329
Net cash used in investing activities | (439,765) | (230,855) | (1,113,384)
FINANCING ACTIVITIES: |  |  |
Payments on long-term debt |  | (40,000) | (40,000)
Proceeds from senior notes, net of discount |  |  | 497,125
Debt issuance costs |  | (1,111) | (5,474)
Intercompany transfers | (305,515) | (300,152) | (358,021)
Excess tax benefit from stock-based compensation | 4,414 | 1,509 | 3,665
Net cash provided by (used in) financing activities | (301,101) | (339,754) | 97,295
Net increase (decrease) in cash and cash equivalents | (390,937) | 205,755 | 363,618
Cash and cash equivalents, beginning of period | 899,028 | 693,273 | 329,655
Cash and cash equivalents, end of period | 508,091 | 899,028 | 693,273
Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |
CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS |  |  |
Net cash provided by (used in) operating activities | 11,116 | (26,288) | 45,244
INVESTING ACTIVITIES: |  |  |
Capital expenditures | (5,911) | (5,972) | (42,339)
Proceeds from asset sales | 688 | 2,599 | 1,313
Net cash used in investing activities | (5,223) | (3,373) | (41,026)
FINANCING ACTIVITIES: |  |  |
Proceeds on short-term debt |  |  | 1,002
Payments on short-term debt |  |  | (1,002)
Excess tax benefit from stock-based compensation | 490 | 200 | 29
Net cash provided by (used in) financing activities | 490 | 200 | 29
Net increase (decrease) in cash and cash equivalents | 6,383 | (29,461) | 4,247
Cash and cash equivalents, beginning of period | 7,488 | 36,949 | 32,702
Cash and cash equivalents, end of period | $ 13,871 | $ 7,488 | $ 36,949

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