Restructuring Costs (Tables)

3 Months Ended

Mar. 31, 2025

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs Incurred

The Company incurred restructuring costs as follows:

	Three Months Ended March 31,
(In millions)	2025		2024
Risk and Insurance Services	$	23	$	22
Consulting	8		11
Corporate	1		9
Total	$	32	$	42

Schedule of Restructuring Activities

Details of the restructuring activity from January 1, 2024 through March 31, 2025, are as follows:

(In millions)	Severance		Real Estate Related Costs (a)		Information Technology		Consulting and Other Outside Services		Total
Liability at January 1, 2024	$	89	$	39	$	—	$	2	$	130
2024 charges	163		66		25		22		276
Cash payments	(177)		(45)		(24)		(24)		(270)
Non-cash charges	—		(18)		(1)		—		(19)
Liability at December 31, 2024	$	75	$	42	$	—	$	—	$	117
2025 charges	23		9		—		—		32
Cash payments	(45)		(12)		—		—		(57)
Non-cash charges	—		(1)		—		—		(1)
Liability at March 31, 2025	$	53	$	38	$	—	$	—	$	91

(a) Includes ROU and fixed asset impairments and other real estate related costs.