| **Accumulated Other Comprehensive Income/(Loss) (Tables)**               | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| **Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Accumulated Other Comprehensive Income/(Loss)                            | Accumulated other comprehensive income/(loss), net of tax, included in the Consolidated Statements of Changes in Stockholder's Equity, consisted of the following as of:(Millions of dollars)    September 30, 2012 September 30, 2011Foreign currency translation$151 $186Derivative financial instruments(8) (7)Total Accumulated other comprehensive income/(loss)$143 $179     |

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| - Details**Name:**us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
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| - Definition
Tabular disclosure of the components of accumulated other comprehensive income (loss).
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580
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