Fair Value Measurements (Schedule of Nonrecurring Fair Value Measurements) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Sep. 30, 2024
Long Lived Assets Held-for-sale [Line Items]
Plant and equipment, net	$ 24,033.4	$ 23,370.9
Fair Value, Nonrecurring \| Project Exit Costs
Long Lived Assets Held-for-sale [Line Items]
Plant and equipment, net	22.5
Impairment of property and equipment	$ 1,687.5

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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