| **Restructuring (Tables)**                          | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Restructuring and Related Activities [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Summary of Activity in Restructuring Accounts       | A summary of the activity in the restructuring accounts and a reconciliation of the liability for the year ended December 31, 2012 is as follows:(in millions of dollars)Balance at December 31, 2011 Provision/ (Income) CashExpenditures Non-cashItems/Currency Change Balance at December 31, 2012Employee termination costs$0.3 $24.0 $(9.2) $0.1 $15.2Termination of lease agreements0.7 (0.1) (0.4) — 0.2Other— 0.1 (0.1) — —Sub-total1.0 24.0 (9.7) 0.1 15.4Asset impairments/net loss on disposal of assets resulting from restructuring activities0.2 0.3 (0.3) (0.2) —Total restructuring liability$1.2 $24.3 $(10.0) $(0.1) $15.4A summary of the activity in the restructuring accounts and a reconciliation of the liability for the year ended December 31, 2011 is as follows: (in millions of dollars)Balance at December 31, 2010 Provision/ (Income) CashExpenditures Non-cashItems/Currency Change Balance at December 31, 2011Employee termination costs$2.2 $(0.6) $(1.4) $0.1 $0.3Termination of lease agreements3.0 (0.5) (1.9) 0.1 0.7Sub-total5.2 (1.1) (3.3) 0.2 1.0Asset impairments/net loss on disposal of assets resulting from restructuring activities— 0.4 (0.1) (0.1) 0.2Total restructuring liability$5.2 $(0.7) $(3.4) $0.1 $1.2 A summary of the activity in the restructuring accounts and a reconciliation of the liability for the year ended December 31, 2010 is as follows: (in millions of dollars)Balance at December 31, 2009 Provision/ (Income) CashExpenditures Non-cashItems/Currency Change Balance at December 31, 2010Employee termination costs$8.0 $(1.5) $(3.9) $(0.4) $2.2Termination of lease agreements4.4 0.2 (1.5) (0.1) 3.0Sub-total12.4 (1.3) (5.4) (0.5) 5.2Asset impairments/net loss on disposal of assets resulting from restructuring activities— 0.8 — (0.8) —Total restructuring liability$12.4 $(0.5) $(5.4) $(1.3) $5.2 |
| Schedule of Rationalization Reserve                 | A summary of the activity in the rationalization charges and a reconciliation of the liability for the year ended December 31, 2011 is as follows: (in millions of dollars)Balance at December 31, 2010 Provision CashExpenditures Non-cashItems/Currency Change Balance at December 31, 2011Employee termination costs$— $4.5 $(4.2) $0.1 $0.4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

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| - Definition
Schedule of Rationalization Reserve by Type of Cost [Table Text Block]
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No definition available.
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| - Definition
Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -Subparagraph b(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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