Debt And Financing Arrangements (Details) $ in Billions	Sep. 30, 2024 USD ($)
Debt Instrument [Line Items]
Fair value of long-term debt	$ 7.5
Carrying value of long-term debt	7.6
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	12.5
Unused lines of credit	8.7
Commercial Paper
Debt Instrument [Line Items]
Maximum borrowing capacity	5.0
Commercial paper outstanding	1.5
Accounts Receivable Securitization Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	2.8
Unused lines of credit	$ 0.7