Vikram Luthar
Chief Financial Officer at Archer-Daniels-Midland
Thank you, Juan. Please turn to Slide 7. The Ag Services and Oilseeds team capped off an outstanding year, with substantially higher year-over-year results in Q4. Ag Services results were higher than the fourth quarter of 2021. Low water conditions reduced North American export volumes, partially offset by the South American team, which executed well to deliver higher margins and volumes. Global trade results were lower than the strong fourth quarter of 2021, with lower ocean freight results partially offset by higher results in EMEA origination and destination marketing. The business benefited from a $110 million legal recovery related to the 2019 and 2020 closure of the Reserve Louisiana export facility.
Crushing results were more than double those of the prior year period. In North America, strong export volumes for soybean meal and growing domestic demand for renewable diesel contributed to strong margins. In EMEA, oil demand powered strong rapeseed margins, more than offsetting higher energy costs compared to the prior year. Expanding margins drove negative timing impacts in the quarter of approximately $40 million.
RPO results were significantly higher year-over-year as the business continued to execute well to meet demand for food oil, renewable diesel in the U.S. and biodiesel globally. Equity earnings from Wilmar were much higher versus the fourth quarter of 2021.
Looking ahead, we expect AS&O results for Q1 to remain strong, similar to last year's very strong quarter, led by continued strength in crush margins and RPO. Ag Services is likely to be lower year-over-year, particularly in light of very strong global trade results in the prior year quarter.
Slide 8, please. Carbohydrate Solutions had a strong 2022, with full year results higher than 2021. For the quarter, results were substantially lower than the fourth quarter of 2021 due to pressured industry ethanol margins. The Starches and Sweeteners subsegment, which includes ethanol production from our wet mills, delivered much higher year-over-year results. The North America business delivered solid volumes and strong margins in both Starches and Sweeteners, partially offsetting lower ethanol margins.
The EMEA team effectively managed risk and delivered improved results on better margins in a continued dynamic environment. The global wheat milling business delivered higher margins driven by solid customer demand. Vantage Corn Processors results were substantially lower as higher ethanol inventory levels pressured margins, especially compared to the very strong margin environment in the fourth quarter of 2021.
Looking at the first quarter for Carbohydrate Solutions, we expect continued solid demand and strong margins for starches, sweeteners and wheat flour. Ethanol margins are currently pressured due to high industry inventory levels. If industry stocks come back down, results for the quarter could be similar to Q1 of 2022. If margins remain pressured, results would likely be lower.
On Slide 9, the Nutrition business continued its strong growth trajectory in 2022. ADM demonstrated that it remains the provider of choice in nutrition for systems as our growing pipeline and continued strong win rates delivered full year revenue growth of 18% on a constant currency basis. The business continued to outperform industry growth levels and delivered 11% higher profits for the full year on a constant currency basis. For the fourth quarter, revenues grew 11% on a constant currency basis. Q4 operating profits were significantly lower than the prior year quarters.
Human Nutrition results were lower than those of the fourth quarter of 2021. Flavors results were similar to the prior year as strong revenue growth helped offset demand fulfillment challenges.
Specialty Ingredients continued to see strong demand for its product portfolio, including plant-based proteins, offset by inventory adjustments.
Health & Wellness was higher year-over-year, driven primarily by the bioactives portfolio, including the results from the DLN acquisition.
Animal results were substantially lower than the prior year quarter, primarily due to the lower margins in amino acids, driven by recovery in the global supply of lysine.
Pet nutrition volumes were lower in Latin America, partially driven by demand fulfillment challenges.
Feed results were stronger, driven by APAC and Latin America, partially offset by the impact of softer demand in EMEA.
As we look ahead, we expect overall Nutrition results in Q1 to be lower than the prior year's record first quarter, with Human Nutrition delivering similar year-over-year results on strong Flavors and SI growth and lower Animal Nutrition results primarily due to weaker margins in amino acids.
I want to take a moment to expand on our view of Nutrition in 2023. Nutrition is expected to continue on a positive growth trajectory for full year 2023, including 10-plus percent profit growth and a similar level of revenue growth. The growth is likely to be led by Human Nutrition and to be weighted in the back half of the year as the first half will see headwinds in Animal Nutrition due to the continued impacts of weaker margins in amino acids, and because we will see increasing recovery in demand fulfillment as we move through the year.
Slide 10, please. Other business results for Q4 were significantly higher than the prior year's fourth quarter. Higher short-term interest rates drove improved earnings in ADM Investor Services and captive insurance experienced favorable underwriting results and lower claim settlements versus the prior year. In the corporate lines, unallocated corporate costs of $299 million were higher year-over-year due primarily to higher IT operating and project-related costs and higher costs in the company's centers of excellence related to growth initiatives.
Other corporate was favorable versus the prior year, primarily due to higher contributions from foreign currency-related hedge activity and lower railroad maintenance expense. Corporate results also included losses related to the mark-to-market adjustment on the Wilmar exchangeable bond and severance totaling $6 million.
Net interest expense for the quarter increased year-over-year on higher interest rates. We expect corporate cost for 2023 to be around $1.5 billion, driven primarily by inflation and higher interest expense. Other business performance should be higher than 2022, offsetting a significant portion of the increased corporate costs as higher interest rates positively impact our ADM IS business.
The effective tax rate for the fourth quarter of 2022 was approximately 16% compared to 21% in the prior year. The decreased rate was driven primarily by changes in the geographic mix of pretax earnings in addition to lower discrete tax expense versus the prior year.
Our full year adjusted tax rate was 17%. For 2023, we expect our adjusted tax rate to be between 16% and 19%.
Next slide, please. Year-to-date operating cash flows before working capital of $5.3 billion are up significantly versus $3.9 billion over the same period last year. Our net debt-to-total capital ratio is about 25%, and we continue to have ample available liquidity.
Our strong cash flows and balance sheet have enabled continued investment in the business, with $1.3 billion in capital expenditures for the full year. We currently plan to maintain capital expenditures at about $1.3 billion in 2023 and continue to have significant financial capacity to pursue strategic growth objectives.
We have been continuing to return capital to shareholders. We distributed $900 million in dividends and repurchased almost $1.5 billion of shares in 2022. We are planning $1 billion in opportunistic buybacks for 2023, subject to other strategic uses of capital. Juan?