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Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Other income (expense) |  |  |  |  |  |
Interest income | $ 0.1 |  | $ 0.1 |  | $ 0.2 | $ 0.2
Unrealized gains (losses) on financial derivatives | 0.7 | [1] | (3.6) | [1] | 1.2 | (1.9)
All other, net | 0.3 |  | 0.1 |  | 0.4 | 0
Other non-operating income (expense), net | $ 1.1 |  | $ (3.4) |  | $ 1.8 | $ (1.7)
[1] | See “Derivative Financial Instruments” in Note 1 for a discussion of accounting policy for such instruments.

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