Long-term and Short-term Debt (Tables)

12 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Schedule of Debt

Long-term debt consists of (in millions):

	September 30,
	2024		2023
2.875% notes, payable in March 2025	$	301.9	$	306.4
6.70% debentures, payable in January 2028	250.0		250.0
3.50% notes, payable in March 2029	425.0		425.0
1.75% notes, payable in August 2031	450.0		450.0
6.25% debentures, payable in December 2037	250.0		250.0
4.20% notes, payable in March 2049	575.0		575.0
2.80% notes, payable in August 2061	450.0		450.0
5.20% debentures, payable in January 2098	200.0		200.0
Unamortized discount, capitalized lease obligations and other	(33.2)		(34.9)
Total debt	2,868.7		2,871.5
Less: Current portion	(307.4)		(8.6)
Long-term debt	$	2,561.3	$	2,862.9

Schedule of Fair Value of Long-term Debt

The following table presents the carrying amounts and estimated fair values of Long-term debt in the Consolidated Balance Sheet (in millions):

	September 30, 2024				September 30, 2023
	Carrying Value		Fair Value		Carrying Value		Fair Value
Current portion of long-term debt	$	307.4	$	305.0	$	8.6	$	8.6
Long-term debt	2,561.3		2,333.5		2,862.9		2,442.6