| **Commitments and Contingent Liabilities (Tables)** | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
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| **Guarantees [Abstract]**                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Guarantees                                          | The maximum potential amount of future payments (undiscounted and without reduction for any amounts that may possibly be recovered under recourse or collateralized provisions) we could be required to make under the guarantees was as follows: (Millions of dollars)        2012 2011 2010Guarantees with customers $151 $159 $139Limited indemnity — 11 17Total guarantees $151 $170 $156        |

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| - Definition
Tabular disclosure of each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties.
+ References
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