J. Schlotman
Analyst · Citi
Thanks, Rodney, and good morning, everyone. I'd like to echo Rodney's comments relative to Cindy and also welcome Kate to the team.
First, I'd like to spend a few minutes discussing our results for the quarter in each of the key performance target areas from our long-term growth plan. Our first metric is identical supermarket sales without fuel. As Rodney noted earlier, we are very pleased with our 5.4% identical supermarket sales growth in the third quarter. It reflects the underlying strength of our core business and our associates' growing connection with customers. Identical supermarket sales growth was driven by a combination of very strong tonnage growth plus an increase in both the number of households shopping with us and the number of visits per household in the third quarter.
As you know, our goal is to grow the number of loyal households at a faster rate than the number of total households who shop with us. I'm happy to report that we continue to meet this goal quarter after quarter. All geographies and supermarket departments had positive identical supermarket sales excluding fuel during the quarter, with our deli and produce departments leading the way. We continue to see outstanding double-digit identical sales growth in our natural foods department.
Our second market -- our second metric is FIFO operating margin without fuel. Several items are included -- are excluded from our third quarter rolling 4 quarters calculations, specifically the 2014 and 2013 adjustment items, the contribution to The Kroger Co. Foundation in the third and fourth quarters of 2014 and the contribution to the UFCW Consolidated Pension Plan in the fourth quarter of 2014 and third quarter of 2015. While items like this occur over time, we feel it is important to report how our operations are performing. On this basis and without fuel, FIFO operating margin increased 18 basis points in the third quarter.
Our operating margin has expanded more than our goal largely due to a combination of 2 factors: first, continued stronger-than-expected ID sales; second, the continued incremental investments we are making in our Customer 1st Strategy are being made in a sustainable way based on insights from 84.51°. This is not a new normal for operating margin expansion, but rather a demonstration of our diligence in how and when we invest.
Return on invested capital on a rolling 4 quarters basis was 14.16%. We are not presenting the comparative number this quarter because of last year's third quarter calculation does not include a full year of Harris Teeter assets and results. We continue to expect return on invested capital for fiscal 2015 to increase from fiscal 2014. This is an important metric as we continue to increase our capital investment to drive our future growth.
Before I share our third quarter results in more detail, I'd like to discuss how we are successfully managing through the current inflationary environment. While inflation continued at a lower rate during the third quarter, which we estimate was approximately 1.1% without fuel, some commodities had high inflation and others had deflation. We saw deflation in produce, while meat, seafood, deli and milk were all -- I'm sorry, we saw inflation in produce, while meat, seafood, deli and milk were all deflationary. We continue to see inflation in pharmaceuticals.
Now I'll share our third quarter results in more detail. As you know, we don't provide guidance for total sales because of the unpredictable influence that fuel has on our overall results. Total sales in the third quarter were affected by the lower retail price of fuel, much like in the second and third quarters -- or first and second quarters. The average price of fuel during the third quarter was $2.30 compared to $3.22 last year. Total sales in the third quarter increased 0.4% to $25.1 billion compared to $25 billion in the same period last year. Excluding fuel, total sales increased 5.5% in the third quarter compared to the same period last year.
In the third quarter, our net earnings totaled $428 million or $0.43 per diluted share. Net earnings in the same period last year were $362 million or $0.36 per diluted share, including a $0.02 benefit due to certain tax items. Excluding this, Kroger's net adjusted earnings were $345 million or $0.35 per diluted share for the third quarter of fiscal 2014. These numbers don't sum due to rounding.
Kroger recorded a $9 million LIFO charge during the third quarter compared to an $85 million LIFO charge in the same quarter last year. We have lowered our full year LIFO expectation to $75 million from $90 million previously. The FIFO gross margin, excluding retail fuel operations, decreased 4 basis points from the same period last year.
Strong identical supermarket sales growth and cost controls allowed Kroger to leverage core operating expenses as a rate of sales in the third quarter. Total operating expenses excluding retail fuel operations, a $25 million contribution to The Kroger Co. Foundation in the third quarter of 2014 and an $80 million contribution to the UFCW pension plan in the third quarter of '15 decreased 23 basis points as a percent of sales compared to last year. Third quarter FIFO profit excluding fuel and the adjustments I mentioned just a moment ago increased approximately $66 million over the prior year.
Now for retail fuel operations. In the third quarter, our cents per gallon fuel margin was approximately $0.238 compared to $0.232 in the same quarter last year. Fuel results have been more difficult to predict than normal. We do not expect fuel margins to remain this -- we did not expect fuel margins to remain this high this late in the year. Our expectation for the fourth quarter is a moderation in margins. Volatility in weekly fuel costs remain high, and where those costs end up will influence our fourth quarter results.
Corporate Brands' performance during the third quarter was strong, representing approximately 27.7% of total units sold and 25.9% of sales dollars excluding fuel and pharmacy. Simple Truth continues to grow at an astonishing rate, setting a record high for total sales in the third quarter while continuing to establish all-time weekly sales records throughout the quarter. Our newest Brand, HemisFares, has been embraced by foodie customers so much so that we are currently working with our Sicilian gelato supplier to expand capacity while maintaining the best-in-the-world quality of the product.
I will provide a brief update on labor relations. We ratified contracts with the UFCW for store associates in Denver and with the Teamsters covering our Southern California distribution centers. We are currently negotiating a contract with the UFCW for store associates in Portland. Our objective in every negotiation is to find a fair and reasonable balance between competitive costs and compensation packages that provide solid wages, good quality, affordable health care and retirement benefits for our associates. Kroger's financial results continue to be pressured by rising health care and pension costs, which some of our competitors do not face. Kroger and the local unions which represent many of our associates should have a shared objective, growing Kroger's business and profitability, which will help us create more jobs and career opportunities and enhance job security for our associates.
Kroger's long-term financial strategy is to use its financial flexibility to drive growth while also returning capital to shareholders. Maintaining its current investment-grade debt rating is the cornerstone of this, and it allows the company to use cash flow to take advantage of strategically and financially compelling opportunities and to continue its fill-in strategy, repurchase shares and fund the dividend, which is expected to increase over time. Our strong financial position has allowed us to return $1.1 billion to shareholders through share buybacks and dividends over the last 4 quarters. During the third quarter, Kroger repurchased approximately 853,000 common shares for a total investment of $31 million.
Capital investments excluding mergers, acquisitions and the purchases of leased facilities totaled $832 million for the third quarter compared to $681 million for the same period last year. We expect capital investments excluding mergers, acquisitions and the purchases of leased facilities to slightly exceed $3.3 billion for the year. We continue to see a strong pipeline of high-quality projects and are encouraged by the results from our new stores. In order to have a steady flow of projects and increase the total number of store projects, we are spending on stores scheduled to open in 2016 to make sure they are ready to meet our target dates. Additionally, we continue to reduce the amount of time it takes to complete projects.
The company's net total debt-to-adjusted-EBITDA ratio decreased to 1.99 compared to 2.27 during the same period last year. We expect our net total debt-to-adjusted-EBITDA ratio to remain under 2.2 upon the close of our Roundy's merger transaction. Kroger's net total debt is $11.3 billion compared to $11.5 billion during the same period last year. As I mentioned last quarter, we have essentially maintained our absolute debt level while returning $1.1 billion to shareholders through share buybacks and dividends over the last 4 quarters, investing $3.2 billion in capital on a rolling 4 quarters basis, plus an additional $160 million on mergers, acquisitions and purchases of leased facilities. In other words, we are keeping our commitments to bondholders and shareholders while creating opportunities for our associates.
Now I'd like to update our growth objectives for the remainder of 2015. Based on our strong year-to-date performance, we raised our net earnings per diluted share guidance to a range of $2.02 to $2.04 for fiscal 2015. The previous guidance was $1.92 to $1.98 per share. This range exceeds the company's long-term net earnings per diluted share growth rate of 8% to 11%. Shareholder return will be further enhanced by a dividend that's expected to increase over time. As with our third quarter results, the performance of fuel in the fourth quarter will determine where we end up in the range. For the fourth quarter of fiscal 2015, we expect identical supermarket sales growth excluding fuel of 4% to 4.5%. As we said in our press release this morning, that implies an annual guidance range of approximately 5% to 5.25%.
Now I will turn it back to Rodney.