John Doyle
Group President and Chief Operating Officer at Marsh & McLennan Companies
Thanks, Dan and good morning everyone. Our second quarter results were outstanding. We had 10% underlying revenue growth with momentum across the business and our adjusted operating income set a second quarter record. I'm pleased with our performance and grateful to our colleagues for the value they deliver to our clients, communities, and shareholders. Before I discuss market trends and our performance, I want to comment on the ways in which we are harnessing the collective strength of Marsh McLennan.
We are finding the intersections where we bring unique capabilities to serve our clients. Earlier this year, I mentioned that I was meeting with our colleagues to identify areas where we can have greater client impact as well as accelerate our growth. These conversations have yielded a range of ideas to drive innovation, deliver critical client solutions, become more agile and efficient, and create growth and value for shareholders. Year to date, we have generated a significant number of wins involving two or more Marsh McLennan businesses and every day we see more potential to succeed together.
Let me share a few recent examples. Marsh and Oliver Wyman helped a regional healthcare client with a broad enterprise risk management strategy. Knowing Marsh has this capability Oliver Wyman involved them in the engagement. The client was so pleased with the value the team delivered that a further opportunity was created for Mercer to consult on workforce issues. Marsh and Mercer engaged a higher education client in the United States about enterprise risk management. The client valued our expertise and ability to facilitate conversations about total risk across all lines of insurance.
As a result, Marsh was awarded the property and casualty insurance program and Mercer secured the student health, travel and athletics business. The client has since engaged the joint team about expanding additional lines of coverage. Guy Carpenter and Oliver Wyman also came together recently to help a large US insurer with strategic advice to reposition a core product. The successful collaboration is expected to lead to additional business and further opportunities to partner on future projects. These are just a few examples of the ways we are helping clients grow faster and become more resilient. Now let me provide an update on current P&C insurance market conditions. Rate increases in the marketplace persist along with continued concerns around the impact of inflation on loss cost and a tightening reinsurance market
The Marsh Global Insurance Market Index showed price increases of 9% year-over-year. This marks the 19th consecutive quarter of rate increases in the commercial P&C insurance marketplace. Looking at pricing by line, the Marsh Market Index showed both global property insurance and global casualty rates up 6% on average. Global financial and professional lines, excluding cyber increased low single digits, while cyber rates rose nearly 80% in some geographies.
As a reminder, our index skews the large account business. However, small and middle market insurance rates continue to rise as well, although less than for large complex accounts. Turning to reinsurance. Guy Carpenter's US Property Catastrophe Rate on Line Index showed increases of approximately 15% through midyear, the largest increase since 2006. Midyear renewals reflected one of the most challenging property markets in many years with pricing driven by inflation, escalating geopolitical risk, and loss experience. Throughout the first half of the year, we saw some reinsurers take tougher positions on specific terms and conditions and shift portfolios to limit capacity in certain lines of business or geographies.
We remain focused on helping our clients navigate these challenging insurance and reinsurance markets and the heightened risk environment. Turning to our performance in the quarter. As I noted earlier, Marsh McLennan had excellent results. In the second quarter, we had 10% underlying revenue growth with 9% in RIS and 10% in consulting. This is a fantastic result considering the prior year second quarter underlying growth was 13%. Bottom line results were strong as well with adjusted operating income growth of 8% in the quarter compared to 24% growth a year ago.
Looking at risk and insurance services. Second quarter revenue was a record $3.3 billion, up 5% compared with a year ago or 9% on an underlying basis. Adjusted operating income increased 9% to a second quarter record of $1 billion and our adjusted operating margin expanded 40 basis points to 32.8%. At Marsh, revenue in the quarter was $2.8 billion, up 5% compared with a year ago. Revenue growth was 9% on an underlying basis and supported by strong renewal growth and new business.
US and Canada had 10% underlying revenue growth. This marks US and Canada's fifth consecutive quarter of double digit underlying revenue growth. International was also strong with underlying growth of 9%. Latin America grew 14%, Asia Pacific was up 11% and EMEA was up 7%. Guy Carpenter's second-quarter revenue was $522 million up 9% on an underlying basis driven by strong retention in new business as well as rate increases, which continued at midyear. Guy Carpenter has now achieved underlying revenue growth of 9% or higher in four of the last five quarters.
In the Consulting segment, revenue was $2.1 billion and up 10% from a year ago on both a reported and underlying basis. This is Consulting's fifth consecutive quarter of double digit underlying revenue growth. Adjusted operating income increased 4% to a second quarter high of $369 million. The adjusted operating margin was 19.3% down 20 basis points versus a year ago. Mercer's revenue was $1.4 billion in the quarter up 7% on an underlying basis. Career grew 17% on an underlying basis, a record since we began reporting this line of business.
We continue to see robust demand for solutions linked to workforce transformation and compensation and rewards. Health underlying revenue growth was also excellent at 10% in the quarter, reflecting growth across all geographies. This quarter's results continued to benefit from strong demand for our solutions, accelerating new business, higher retention, increased enrolled lives from a strong labor market, and medical inflation. Wealth increased 1% on an underlying basis reflecting modest growth and defined benefits, which offset a modest decline in investments. Our assets under management were $346 billion at the end of the second quarter down 12% from the prior year reflecting capital market and foreign exchange headwinds.
In May, Mercer announced an agreement with Westpac to acquire BT Super Trust and advanced Asset Management in Australia. This will create a $45 billion Mercer fund helping more than 850,000 Australians invest for retirement. The transaction is expected to be completed in the first half of 2023. Oliver Wyman's strong momentum continued. Revenue in the second quarter was $695 million, an increase of 16% on an underlying basis. This follows a 28% comparable in the second quarter of 2021 and reflects continued strong demand across all geographies. Overall, I'm proud of our second quarter performance, which demonstrates the continued momentum across our business, despite a more uncertain macro environment. Now I'll turn the call over to Mark for further detail on our financial results and a discussion of our outlook for the rest of 2022.