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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, RISKS AND UNCERTAINTIES - Recently issued accounting updates (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 01, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | Oct. 01, 2017
New accounting pronouncements |  |  |  |  |
Net cash provided by operating activities |  | $ 544,531 | $ 361,631 | $ 754,531 |
Net cash used in financing activities |  | (309,189) | (300,829) | (344,135) |
Retained earnings |  | (4,027,779) | (3,855,686) |  |
ASU 2016-09 | Adjustments |  |  |  |  |
New accounting pronouncements |  |  |  |  |
Net cash provided by operating activities |  |  | 4,400 | 900 |
Net cash used in financing activities |  |  | (4,400) | $ (900) |
Retained earnings |  |  |  |  | $ 300
ASU 2016-18 | Adjustments |  |  |  |  |
New accounting pronouncements |  |  |  |  |
Net cash provided by operating activities |  | $ 2,700 | $ 9,500 |  |
ASU 2016-01 | Adjustments |  |  |  |  |
New accounting pronouncements |  |  |  |  |
Reclassification adjustment | $ 44,000 |  |  |  |

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
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