Biggest change(*) Rounded to whole percentages. 39 Revenue – Reconciliation of Non-GAAP Measures The following table provides the reconciliation of GAAP revenue to Non-GAAP revenue for the years ended December 31, 2023 and 2022: 2023 2022 Year Ended December 31, (In millions) GAAP Revenue Currency Impact Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue GAAP Revenue Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue Risk and Insurance Services Marsh (a) $ 11,378 $ 70 $ (109) $ 11,339 $ 10,505 $ 5 $ 10,510 Guy Carpenter (b) 2,258 16 (80) 2,194 2,020 (19) 2,001 Subtotal 13,636 86 (189) 13,533 12,525 (14) 12,511 Fiduciary interest income 453 1 — 454 120 — 120 Total Risk and Insurance Services 14,089 87 (189) 13,987 12,645 (14) 12,631 Consulting Mercer (c) 5,587 23 11 5,621 5,345 (68) 5,277 Oliver Wyman Group (a) 3,122 (15) (79) 3,028 2,794 11 2,805 Total Consulting 8,709 8 (68) 8,649 8,139 (57) 8,082 Corporate Eliminations (62) — — (62) (64) — (64) Total Revenue $ 22,736 $ 95 $ (257) $ 22,574 $ 20,720 $ (71) $ 20,649 The following table provides more detailed revenue information for certain of the components presented in the previous table: 2023 2022 Year Ended December 31, (In millions) GAAP Revenue Currency Impact Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue GAAP Revenue Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue Marsh: EMEA (a) (d) $ 3,262 $ 12 $ (6) $ 3,268 $ 2,997 $ 8 $ 3,005 Asia Pacific (d) 1,295 37 (5) 1,327 1,215 — 1,215 Latin America 559 6 1 566 502 — 502 Total International 5,116 55 (10) 5,161 4,714 8 4,722 U.S./Canada 6,262 15 (99) 6,178 5,791 (3) 5,788 Total Marsh $ 11,378 $ 70 $ (109) $ 11,339 $ 10,505 $ 5 $ 10,510 Mercer: Wealth (c) $ 2,507 $ 11 $ 19 $ 2,537 $ 2,366 $ 69 $ 2,435 Health (c) 2,061 4 (2) 2,063 2,017 (137) 1,880 Career 1,019 8 (6) 1,021 962 — 962 Total Mercer $ 5,587 $ 23 $ 11 $ 5,621 $ 5,345 $ (68) $ 5,277 (a) Acquisitions, dispositions, and other in 2022 includes the loss on deconsolidation of the Company's Russian businesses at Marsh of $27 million and Oliver Wyman Group of $12 million.
Biggest changeThe following tables present the Company's non-GAAP revenue for the years ended December 31, 2024 and 2023 and the related non-GAAP underlying revenue change: Year Ended December 31, (In millions, except percentages) GAAP Revenue % Change GAAP Revenue* Non-GAAP Revenue Non-GAAP Underlying Revenue* 2024 2023 2024 2023 Risk and Insurance Services Marsh $ 12,536 $ 11,378 10 % $ 12,218 $ 11,375 7 % Guy Carpenter 2,362 2,258 5 % 2,371 2,188 8 % Subtotal 14,898 13,636 9 % 14,589 13,563 8 % Fiduciary interest income 497 453 493 453 Total Risk and Insurance Services 15,395 14,089 9 % 15,082 14,016 8 % Consulting Mercer 5,743 5,587 3 % 5,629 5,338 5 % Oliver Wyman Group 3,390 3,122 9 % 3,294 3,120 6 % Total Consulting 9,133 8,709 5 % 8,923 8,458 6 % Corporate Eliminations (70) (62) (70) (62) Total Revenue $ 24,458 $ 22,736 8 % $ 23,935 $ 22,412 7 % The following table provides more detailed revenue information for certain of the components presented in the previous table: Year Ended December 31, (In millions, except percentages) GAAP Revenue % Change GAAP Revenue* Non-GAAP Revenue Non-GAAP Underlying Revenue* 2024 2023 2024 2023 Marsh: EMEA $ 3,530 $ 3,262 8 % $ 3,521 $ 3,259 8 % Asia Pacific 1,414 1,295 9 % 1,373 1,295 6 % Latin America 575 559 3 % 613 559 10 % Total International 5,519 5,116 8 % 5,507 5,113 8 % U.S./Canada 7,017 6,262 12 % 6,711 6,262 7 % Total Marsh $ 12,536 $ 11,378 10 % $ 12,218 $ 11,375 7 % Mercer: Wealth $ 2,584 $ 2,507 3 % $ 2,455 $ 2,361 4 % Health 2,100 2,061 2 % 2,115 1,958 8 % Career 1,059 1,019 4 % 1,059 1,019 4 % Total Mercer $ 5,743 $ 5,587 3 % $ 5,629 $ 5,338 5 % (*) Rounded to whole percentages. 41 Revenue – Reconciliation of Non-GAAP Measures The following table provides the reconciliation of GAAP revenue to Non-GAAP revenue for the years ended December 31, 2024 and 2023: 2024 2023 Year Ended December 31, (In millions) GAAP Revenue Currency Impact Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue GAAP Revenue Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue Risk and Insurance Services Marsh $ 12,536 $ 73 $ (391) $ 12,218 $ 11,378 $ (3) $ 11,375 Guy Carpenter (a) 2,362 7 2 2,371 2,258 (70) 2,188 Subtotal 14,898 80 (389) 14,589 13,636 (73) 13,563 Fiduciary interest income 497 1 (5) 493 453 — 453 Total Risk and Insurance Services 15,395 81 (394) 15,082 14,089 (73) 14,016 Consulting Mercer (b) 5,743 37 (151) 5,629 5,587 (249) 5,338 Oliver Wyman Group (c) 3,390 (5) (91) 3,294 3,122 (2) 3,120 Total Consulting 9,133 32 (242) 8,923 8,709 (251) 8,458 Corporate Eliminations (70) — — (70) (62) — (62) Total Revenue $ 24,458 $ 113 $ (636) $ 23,935 $ 22,736 $ (324) $ 22,412 The following table provides more detailed revenue information for certain of the components presented in the previous table: 2024 2023 Year Ended December 31, (In millions) GAAP Revenue Currency Impact Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue GAAP Revenue Acquisitions/ Dispositions/ Other Impact Non-GAAP Revenue Marsh: EMEA $ 3,530 $ (10) $ 1 $ 3,521 $ 3,262 $ (3) $ 3,259 Asia Pacific 1,414 25 (66) 1,373 1,295 — 1,295 Latin America 575 51 (13) 613 559 — 559 Total International 5,519 66 (78) 5,507 5,116 (3) 5,113 U.S./Canada 7,017 7 (313) 6,711 6,262 — 6,262 Total Marsh $ 12,536 $ 73 $ (391) $ 12,218 $ 11,378 $ (3) $ 11,375 Mercer: Wealth (b) $ 2,584 $ — $ (129) $ 2,455 $ 2,507 $ (146) $ 2,361 Health (b) 2,100 20 (5) 2,115 2,061 (103) 1,958 Career 1,059 17 (17) 1,059 1,019 — 1,019 Total Mercer $ 5,743 $ 37 $ (151) $ 5,629 $ 5,587 $ (249) $ 5,338 (a) Acquisitions, dispositions, and other in 2023 includes a gain from legal settlement with a competitor of $58 million, excluding legal fees.