OPERATING COSTS - Summary of operating costs (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Operating Costs And Expenses [Abstract]
Rental cost	¥ 642,354	¥ 813,773	¥ 975,342
Depreciation expenses	75,332	256,056	207,814
Personnel cost	224,125	77,392	23,698
Cost for value-added services and others	7,843	56,194	98,138
Total	¥ 949,654	¥ 1,203,415	¥ 1,304,992

Cost of labor directly related to good produced and service rendered. Includes, but is not limited to, payroll cost and equity-based compensation.

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Amount of expense for allocation of cost of tangible asset over its useful life directly used in production of good and rendering of service.

+ References

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Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense.

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Other costs incurred during the reporting period related to other revenue generating activities.

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