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INCOME TAXES - Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
DEFERRED TAX ASSETS |  |
Lease liabilities | $ 71.0 | $ 37.0
Inventories | 16.8 | 15.1
Accrued liabilities | 65.6 | 63.0
Foreign tax credit carryovers | 14.9 | 17.2
Net operating loss carryovers | 14.2 | 14.7
Accounts receivable | 8.5 | 5.9
Postretirement benefits | 0.9 | 6.5
Other | 4.1 | 7.2
Gross deferred tax assets | 196.0 | 166.6
Valuation allowance | (32.3) | (33.8)
Total deferred tax assets | 163.7 | 132.8
DEFERRED TAX LIABILITIES |  |
Intangible assets | (73.3) | (65.6)
Lease right-of-use assets | (69.6) | (35.9)
Property, plant and equipment | (55.8) | (52.7)
Outside basis difference in equity investments | (7.2) | 0.0
Other | (5.6) | (3.8)
Total deferred tax liabilities | (211.5) | (158.0)
Net deferred tax liability | $ (47.8) | $ (25.2)

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- Definition The tax effect as of the balance sheet date of the amount of estimated future tax deductions arising from accounts receivable and uncollectible accounts, which can only be deducted for tax purposes when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. + References No definition available. + Details
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