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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2018
Inventories |
Summary of inventories |
|  |  | December 31, |
(Millions of dollars) |  |  | 2018 |  | 2017 |
At lower of LIFO cost or market: |  |  |  |  |  |  |  |
Hogs and materials |  |  | $ | 361 |  | $ | 313 |
Fresh pork and materials |  |  |  | 36 |  |  | 28 |
LIFO adjustment |  |  |  | (58) |  |  | (31) |
Total inventories at lower of LIFO cost or market |  |  |  | 339 |  |  | 310 |
At lower of FIFO cost and net realizable value: |  |  |  |  |  |  |  |
Grains, oilseeds and other commodities |  |  |  | 229 |  |  | 253 |
Sugar produced and in process |  |  |  | 17 |  |  | 38 |
Other |  |  |  | 81 |  |  | 90 |
Total inventories at lower of FIFO cost and net realizable value |  |  |  | 327 |  |  | 381 |
Grain, flour and feed at lower of weighted average cost and net realizable value |  |  |  | 149 |  |  | 89 |
Total inventories |  |  | $ | 815 |  | $ | 780 |
Schedule of reserve for LIFO valuation |
|  | Balance at |  | Increase |  | Balance at |
(Millions of dollars) |  | beginning of year |  | (decrease) |  | end of year |
Reserve for LIFO Valuation: |  |  |  |  |  |  |  |  |
Year Ended December 31, 2018 |  | $ | 31 |  | 27 |  | $ | 58 |
Year Ended December 31, 2017 |  | $ | 21 |  | 10 |  | $ | 31 |
Year Ended December 31, 2016 |  | $ | 28 |  | (7) |  | $ | 21 |

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