Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis at March 31, 2025 and December 31, 2024:

	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions)	03/31/25		12/31/24		03/31/25		12/31/24		03/31/25		12/31/24		03/31/25		12/31/24
Assets:
Financial instruments owned:
Exchange traded equity securities (a)	$	11	$	7	$	—	$	—	$	—	$	—	$	11	$	7
Mutual funds (a)	191		194		—		—		—		—		191		194
Unit investment trust (a)	—		—		—		83		—		—		—		83
Money market funds (b)	355		353		—		—		—		—		355		353
Total assets measured at fair value	$	557	$	554	$	—	$	83	$	—	$	—	$	557	$	637
Fiduciary Assets:
Money market funds	$	59	$	76	$	—	$	—	$	—	$	—	$	59	$	76
Total fiduciary assets measured at fair value	$	59	$	76	$	—	$	—	$	—	$	—	$	59	$	76
Liabilities:
Contingent purchase consideration liabilities (c)	$	—	$	—	$	—	$	—	$	160	$	161	$	160	$	161
Total liabilities measured at fair value	$	—	$	—	$	—	$	—	$	160	$	161	$	160	$	161

(a)Included in other assets in the consolidated balance sheets.

(b)Included in cash and cash equivalents in the consolidated balance sheets.

(c)Included in accounts payable and accrued liabilities and other liabilities in the consolidated balance sheets.

Schedule of Changes in Fair Value of Level 3 Liabilities Representing Acquisition Related Contingent Consideration

The following table sets forth a summary of the changes in fair value of the Company’s Level 3 liabilities for the three months ended March 31, 2025 and 2024:

	Three Months Ended  March 31,
(In millions)	2025		2024
Balance at January 1,	$	161	$	252
Net additions	5		13
Payments	(19)		(26)
Revaluation impact	9		6
Other	4		(3)
Balance at end of period	$	160	$	242