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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2012
Goodwill [Abstract] |
Summary of Goodwill |
(in millions) |  | Fuel Specialties |  |  | Performance Chemicals |  |  | Octane Additives |  |  | Total |
At January 1, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  | $ | 108.9 |  |  | $ | 30.1 |  |  | $ | 236.6 |  |  | $ | 375.6 |
Accumulated impairment losses |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (232.0 | ) |  |  | (232.0 | )
Net book amount |  |  | 108.9 |  |  |  | 30.1 |  |  |  | 4.6 |  |  |  | 143.6 |
Exchange effect |  |  | (0.1 | ) |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (0.1 | )
Impairment losses |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (2.0 | ) |  |  | (2.0 | )
At December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  |  | 108.8 |  |  |  | 30.1 |  |  |  | 236.6 |  |  |  | 375.5 |
Accumulated impairment losses |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (234.0 | ) |  |  | (234.0 | )
Net book amount |  |  | 108.8 |  |  |  | 30.1 |  |  |  | 2.6 |  |  |  | 141.5 |
Exchange effect |  |  | 0.1 |  |  |  | 0.0 |  |  |  | (0.1 | ) |  |  | 0.0 |
Acquisitions |  |  | 8.7 |  |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 8.7 |
Impairment losses |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (1.2 | ) |  |  | (1.2 | )
At December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  |  | 117.6 |  |  |  | 30.1 |  |  |  | 236.5 |  |  |  | 384.2 |
Accumulated impairment losses |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (235.2 | ) |  |  | (235.2 | )
Net book amount |  | $ | 117.6 |  |  | $ | 30.1 |  |  | $ | 1.3 |  |  | $ | 149.0 |
Impairment charge increase/(decrease) due to assumptions and factor change |
(in millions) |  |  |  |  | Approximate Increase/(Decrease) to Impairment Charge |
|  | Change |  |  | Fuel Specialties |  |  | Performance Chemicals |  |  | Octane Additives |
Credit-adjusted risk-free rate |  |  | +10 | % |  | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 0.0 |
Credit-adjusted risk-free rate |  |  | -10 | % |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
After-tax cash flows |  |  | +10 | % |  |  | 0.0 |  |  |  | 0.0 |  |  |  | (2.4 | )
After-tax cash flows |  |  | -10 | % |  | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 2.4 |
Purchase price and fair values of assets acquired and liabilities assumed |
(in millions) |  | Strata |
Other intangible assets |  | $ | 48.0 |
Goodwill |  |  | 8.7 |
Other net assets |  |  | 2.7 |
Purchase price, net of cash acquired |  | $ | 59.4 |
Financial position of operating results |
(in millions, except per share data) |  | 2012 |  |  | 2011 |
Net sales |  | $ | 793.5 |  |  | $ | 790.1 |
Net income |  | $ | 73.4 |  |  | $ | 51.9 |
Earnings per share – basic |  | $ | 3.16 |  |  | $ | 2.19 |
– diluted |  | $ | 3.07 |  |  | $ | 2.11 |

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