Lower-than-expected inflation contributed to the highest quarterly increase in unit movement — which Kroger calls tonnage — since the second quarter of 2010.

The Cincinnati-based grocer, which operates the Kroger, Ralphs, Smith's and Food 4 Less chains, recorded net income of $316.5 million, or 60 cents per share, for the third quarter ended Nov. 3, compared with $195.9 million, or 33 cents per share, a year earlier.

Excluding benefits from a settlement with credit card companies and a reduction in its obligation to fund a union pension fund, Kroger earned 46 cents a share in the latest quarter.

Total sales, including fuel, increased 5.9 percent to $21.81 billion, topping the average analyst estimate of $21.65 billion, according to Thomson Reuters I/B/E/S.

Kroger raised its full-year outlook for earnings per share, excluding the two special items, to a range of $2.44 to $2.46. It had forecast $2.35 to $2.42.

Charges also were down in the latest quarter.

Kroger's LIFO (last-in, first-out) inventory accounting charge was $15.5 million in the latest quarter, versus $61.6 million a year earlier, due to easing food inflation.

Operating, general and administrative costs plus rent and depreciation, excluding retail fuel operations and the two adjustment items, declined 21 basis points as a percent of sales.