Commitments and Contingencies (Litigation and Environmental Narrative) (Details) R$ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2010 BRL (R$)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 BRL (R$) site	Sep. 30, 2023 USD ($) site	Sep. 30, 2022 USD ($)
Loss Contingencies [Line Items]
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]			Other noncurrent liabilities	Other noncurrent liabilities	Other noncurrent liabilities
Alleged Anticompete Litigation
Loss Contingencies [Line Items]
Civil fines imposed	R$ 179.2	$ 36,000,000
Provision for litigation		$ 0
Maximum of loss contingency range subject to interest			R$ 179.2	$ 36,000,000
Environmental
Loss Contingencies [Line Items]
Approximate number of sites on which settlement has not been reached | site			27	27
Accrual for environmental loss contingencies				$ 64,500,000	$ 71,300,000
Accrual for environmental loss contingencies, maximum payout period		26 years
Environmental | Minimum
Loss Contingencies [Line Items]
Estimate of possible exposure from environment loss contingencies				64,000,000
Environmental | Maximum
Loss Contingencies [Line Items]
Estimate of possible exposure from environment loss contingencies				$ 78,000,000