| **Accumulated other comprehensive loss**                                 | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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| **Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Accumulated other comprehensive loss                                     | ACCUMULATED OTHER COMPREHENSIVE LOSSThe following table presents the changes in accumulated other comprehensive loss, net of tax: Pensions and OtherPostretirementBenefitsForeign CurrencyTranslationAdjustmentsAccumulated OtherComprehensive LossBalance at December 31, 2010 $(159)  $(261)  $(420) Translation adjustments —  (43)  (43) Amortization of prior service cost (2)  —  (2) Amortization of actuarial net loss 14  —  14 Actuarial net loss arising in the year (148)  —  (148) Deferred taxes 44  —  44 Balance at December 31, 2011 (251)  (304)  (555) Translation adjustments —  78  78 Amortization of prior service cost (2)  —  (2) Amortization of actuarial net loss 22  —  22 Actuarial net loss arising in the year (66)  —  (66) Plan amendments 60  —  60 Deferred taxes (13)  —  (13) Balance at December 31, 2012 $(250)  $(226)  $(476)  |

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| - Definition
The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.
+ References
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