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Discontinued Operations, Goodwill and Intangible Assets - Schedule of Significant Components Included in Statement of Cash Flows for Discontinued Operations (Details) - Held for Sale - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Discontinued Operations, Goodwill and Intangible Assets [Line Items]
Payments for capital expenditures	$ 0.0	$ 2.1	$ 0.4	$ 2.1
Noncash increase in noncurrent assets held for sale due to deconsolidation of a joint venture	41.6	0.0	41.6	0.0
Noncash decrease in noncontrolling interest due to deconsolidation of a joint venture	$ (13.8)	$ 0.0	$ (13.8)	$ 0.0

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- Definition

Disposal Groups, Including Discontinued Operations, Noncash Decrease In Noncontrolling Interest

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- Definition

Amount of capital expenditure attributable to discontinued operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-5B

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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.

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