Segment Information (Tables)

3 Months Ended

Mar. 31, 2026

Schedule of Segment Reporting Information, by Segment

The following table presents segment revenue, segment expenses and segment operating income for our reportable segments for the three months ended March 31, 2026 and 2025.


	Three Months Ended March 31,
	HWC				R&B				Total
	2026		2025		2026		2025		2026		2025
Segment revenue excluding interest income	$	1,257	$	1,158	$	1,091	$	1,005	$	2,348	$	2,163
Interest income		8		7		25		22		33		29
Total segment revenue		1,265		1,165		1,116		1,027		2,381		2,192

Other segment expense		887		823		854		791		1,741		1,614
Depreciation		32		31		10		10		42		41
Total segment expense		919		854		864		801		1,783		1,655

Segment operating income	$	346	$	311	$	252	$	226	$	598	$	537

Net Operating Income of the Reported Segments

The following table presents reconciliations of the information reported by segment to the Company’s condensed consolidated statements of comprehensive income amounts reported for the three months ended March 31, 2026 and 2025.


	Three Months Ended March 31,
	2026			2025
Revenue:
Total segment revenue	$	2,381		$	2,192
Reimbursable expenses and other		31			31
Revenue	$	2,412		$	2,223

Total segment operating income	$	598		$	537
Amortization		(48	)		(48	)
Transaction and integration expenses (i)		(41	)		—
Unallocated, net (ii)		(61	)		(57	)
Income from operations		448			432
Interest expense		(77	)		(65	)
Other income/(loss), net		5			(64	)
Income from operations before income taxes and interest in earnings of associates	$	376		$	303

(i)

Primarily includes share-based compensation and other transaction-related costs attributable to our Newfront acquisition (see Note 3 — Acquisitions).

(ii)

Includes certain costs, primarily related to corporate functions which are not directly related to the segments, and certain differences between budgeted expenses determined at the beginning of the year and actual expenses that we report for U.S. GAAP purposes.

Revenue and Tangible Long-lived Assets by Geographical Areas

Below are our revenue (on the basis of where the work was performed) and tangible long-lived assets for Ireland, our country of domicile, countries with significant concentrations and all other foreign countries as of and for the periods ended as indicated:


	Revenue				Long-Lived Assets (i)
	Three months ended March 31,				March 31,		December 31,
	2026		2025		2026		2025
Ireland	$	39	$	35	$	7	$	7

United States		982		932		297		282
United Kingdom		501		451		511		521
Rest of World		890		805		355		372
Total Foreign Countries		2,373		2,188		1,163		1,175
	$	2,412	$	2,223	$	1,170	$	1,182

(i)

Tangible long-lived assets consist of fixed assets and right-of-use (‘ROU’) assets.