Investments (Tables)

6 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Investments

Our investments consist of (in millions):

	March 31, 2024		September 30, 2023
Fixed income securities	$	0.2	$	0.6
Equity securities (other)	108.8		96.0
Other	63.0		61.1
Total investments	172.0		157.7
Less: Short-term investments (1)	(0.2)		(0.6)
Long-term investments	$	171.8	$	157.1

(1) Short-term investments are included in Other current assets in the Consolidated Balance Sheet.

Gain (Loss) on Securities

We record gains and losses on investments within the Change in fair value of investments line in the Consolidated Statement of Operations. The gains and losses on investments we recorded for the following periods were (in millions):

	Three Months Ended March 31,				Six Months Ended March 31,
	2024		2023		2024		2023
Net gain on equity securities (level 1)	$	—	$	63.0	$	—	$	204.0
Net gain on equity securities (other)	2.5		—		5.0		—
Equity method gain (loss) on Other investments	0.3		—		0.9		(0.4)
Change in fair value of investments	2.8		63.0		5.9		203.6
Total net realized gain on equity securities	—		19.0		—		52.9
Total net unrealized gain on equity securities	$	2.5	$	44.0	$	5.0	$	151.1