Investments (Tables)

6 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Our investments consist of (in millions):


	March 31, 2023		September 30, 2022
Fixed income securities	$	0.6	$	12.6
Equity securities (level 1)	915.0		928.8
Equity securities (other)	81.4		76.4
Other	56.9		50.8
Total investments	1,053.9		1,068.6
Less: Short-term investments (1)	(0.6)		(12.6)
Long-term investments	$	1,053.3	$	1,056.0

(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,
	2023		2022		2023		2022
Net gain (loss) on equity securities (level 1)	$	63.0	$	(142.0)	$	204.0	$	(127.6)
Net gain on equity securities (other)	—		8.7		—		8.7
Equity method loss on Other investments	—		(7.4)		(0.4)		(14.2)
Change in fair value of investments	63.0		(140.7)		203.6		(133.1)

Total net realized gain on equity securities	19.0		0.2		52.9		0.2
Total net unrealized gain (loss) on equity securities	$	44.0	$	(133.5)	$	151.1	$	(119.1)