XML 40 R27.htm IDEA: XBRL DOCUMENT v3.24.3

Investments in Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments in Marketable Securities

The following table summarizes the cost, gross unrealized gains, gross unrealized losses, and fair value of investments in

equity securities:

	December 31, 2023		September 30, 2024
Cost	$35.3		$37.6
Unrealized gains	2.6		4.7
Unrealized losses	(0.0)		(0.3)
Fair value	$37.9		$42.0

The following table summarizes the cost, gross unrealized gains, gross unrealized losses, and fair value of investments in

U.S. Treasury securities classified as available-for-sale, all of which matured during the nine months ended September 30,

2024, and consolidated Affiliate sponsored investment products classified as trading:

	Available-for-Sale				Trading
	December 31, 2023		September 30, 2024		December 31, 2023		September 30, 2024
Cost	$405.4		$—		$17.9		$23.3
Unrealized gains	0.0		—		—		0.8
Unrealized losses	(0.1)		—		(0.1)		—
Fair value	$405.3		$—		$17.8		$24.1

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

+ References

No definition available.

+ Details

Name:	us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration