Deferred Tax Assets, Operating Loss Carryforwards, Domestic, Subject To Limitation

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- Definition

Deferred Tax Assets, Outside Basis In Equity Investments

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- Definition

Deferred Tax Assets, Valuation Allowance, Not Expected To Be Utilized

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- Definition

Deferred Tax Assets, Valuation Allowance Related To Other Items

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No definition available.

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- Definition

Operating Loss Carryforwards, State and Local

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- Definition

Tax Loss Carryforwards, Minimum Period Carried Forward

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No definition available.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

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- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

+ References

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

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- Definition

Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

+ References

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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- Definition

Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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- Definition

Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.

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- Definition

Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-217

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- Definition

Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

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Amount of interest expense accrued for an underpayment of income taxes.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred tax assets, net of valuation allowance	$ 245.9	$ 309.2
Valuation allowance	(96.8)	(96.5)
Convertible debt investments	4.7	43.6
Outside basis difference in equity investments	62.7	23.1
Deferred tax assets, valuation allowance, not expected to be utilized	42.3	0.0
Foreign tax credit carryovers	13.7	15.2
Deferred tax assets, operating loss carryforwards, subject to limitation	8.6	9.9
Statutory tax benefit of net operating loss carryovers and related valuation allowances	8.4	9.7
Net operating loss carryovers	39.6	56.4
Gross unrecognized tax benefits	22.8	25.7	$ 34.6	$ 35.8
Unrecognized tax benefits that would have an impact on the effective tax rate	21.4	23.1	31.1
Unrecognized tax benefits accrued payment of interest	6.7	5.8	3.9
Unrecognized tax benefits accrued payment of penalties	1.1	1.1	$ 1.3
Other assets
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred tax assets, net of valuation allowance	121.1	191.3
Other liabilities
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred tax liabilities, net	7.6	7.0
Foreign Country
Investments, Owned, Federal Income Tax Note [Line Items]
Valuation allowance	(2.9)	(4.6)
Foreign tax credit carryovers	13.7	15.2
Deferred tax assets, operating loss carryforwards, foreign	2.9	6.8
U.S. state and local tax authorities
Investments, Owned, Federal Income Tax Note [Line Items]
Valuation allowance	(7.7)	(7.0)
Deferred tax assets, tax credit carryovers	1.0	1.0
Valuation allowance for state credits	0.8	0.8
Deferred tax assets, operating loss carryforward	$ 17.3	19.1
State net operating losses carryforward period, minimum	5 years
Valuation allowance, other state items	$ 2.9	2.6
Domestic Tax Authority
Investments, Owned, Federal Income Tax Note [Line Items]
Net operating loss carryovers	10.8
Foreign Country, Other
Investments, Owned, Federal Income Tax Note [Line Items]
Valuation allowance	$ (13.4)	$ (13.0)