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Fair Value Measurements (Tables) | 12 Months Ended
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Sep. 30, 2020
Fair Value Disclosures [Abstract] |
Fair Value Measurement on Company's Assets and Liabilities | The following tables present the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and 2019:
|  | As of September 30, 2020 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 558,633 |  |  | $ | — |  |  | $ | — |  |  | $ | 558,633 |
Corporate bonds |  |  | — |  |  |  | 752 |  |  |  | — |  |  |  | 752 |
Total available-for-sale securities |  |  | 558,633 |  |  |  | 752 |  |  |  | — |  |  |  | 559,385 |
Equity Investments |  |  | — |  |  |  | — |  |  |  | 24,211 |  |  |  | 24,211 |
Derivative financial instruments, net |  |  | — |  |  |  | 20,636 |  |  |  | — |  |  |  | 20,636 |
Other liabilities |  |  | — |  |  |  | — |  |  |  | (19,641 | ) |  |  | (19,641 | )
Total |  | $ | 558,633 |  |  | $ | 21,388 |  |  | $ | 4,570 |  |  | $ | 584,591 |
|  | As of September 30, 2019 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 69,370 |  |  | $ | — |  |  | $ | — |  |  | $ | 69,370 |
Total available-for-sale securities |  |  | 69,370 |  |  |  | — |  |  |  | — |  |  |  | 69,370 |
Equity Investments |  |  | — |  |  |  | — |  |  |  | 18,008 |  |  |  | 18,008 |
Derivative financial instruments, net |  |  | — |  |  |  | 7,890 |  |  |  | — |  |  |  | 7,890 |
Other liabilities |  |  | — |  |  |  | — |  |  |  | (29,805 | ) |  |  | (29,805 | )
Total |  | $ | 69,370 |  |  | $ | 7,890 |  |  | $ | (11,797 | ) |  | $ | 65,463 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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