Debt (Related Party Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Total Debt	$ 17,698.4	$ 14,227.9
Lu-An Clean Energy Company Transaction \| Related Party
Debt Instrument [Line Items]
Total Debt	$ 236.5	$ 304.4

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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