Fair Value Measurements - Schedule of fair value of financial assets and liabilities measured on a recurring basis (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
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Dec. 31, 2012
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Financial Assets | ||||||||||||
Other investments | $ 214.1 | $ 187.8 | ||||||||||
Financial Liabilities | ||||||||||||
Level 1 to Level 2 transfers | 0 | 2.0 | ||||||||||
Fair value measured on a recurring basis [Member] | Fair value [Member]
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Financial Assets | ||||||||||||
Cash equivalents | 39.0 | 13.5 | ||||||||||
Trading securities | 22.5 | [1] | 13.6 | [1] | ||||||||
Available-for-sale securities | 135.4 | [1] | 115.3 | [1] | ||||||||
Other investments | 164.3 | 155.4 | ||||||||||
Financial Liabilities | ||||||||||||
Contingent payment arrangements | 50.2 | [2] | 31.0 | [2] | ||||||||
Obligations to related parties | 76.9 | [3] | 77.8 | [3] | ||||||||
Interest rate derivatives | 2.5 | [4] | 4.0 | [4] | ||||||||
Fair value measured on a recurring basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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Financial Assets | ||||||||||||
Cash equivalents | 39.0 | 13.5 | ||||||||||
Trading securities | 22.5 | [1] | 13.6 | [1] | ||||||||
Available-for-sale securities | 135.4 | [1] | 115.3 | [1] | ||||||||
Other investments | 14.1 | 15.7 | ||||||||||
Financial Liabilities | ||||||||||||
Contingent payment arrangements | 0 | [2] | 0 | [2] | ||||||||
Obligations to related parties | 0 | [3] | 0 | [3] | ||||||||
Interest rate derivatives | 0 | [4] | 0 | [4] | ||||||||
Fair value measured on a recurring basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
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Financial Assets | ||||||||||||
Cash equivalents | 0 | 0 | ||||||||||
Trading securities | 0 | [1] | 0 | [1] | ||||||||
Available-for-sale securities | 0 | [1] | 0 | [1] | ||||||||
Other investments | 18.4 | 20.8 | ||||||||||
Financial Liabilities | ||||||||||||
Contingent payment arrangements | 0 | [2] | 0 | [2] | ||||||||
Obligations to related parties | 0 | [3] | 0 | [3] | ||||||||
Interest rate derivatives | 2.5 | [4] | 4.0 | [4] | ||||||||
Fair value measured on a recurring basis [Member] | Significant Other Unobservable Inputs (Level 3) [Member]
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Financial Assets | ||||||||||||
Cash equivalents | 0 | 0 | ||||||||||
Trading securities | 0 | [1] | 0 | [1] | ||||||||
Available-for-sale securities | 0 | [1] | 0 | [1] | ||||||||
Other investments | 131.8 | 118.9 | ||||||||||
Financial Liabilities | ||||||||||||
Contingent payment arrangements | 50.2 | [2] | 31.0 | [2] | ||||||||
Obligations to related parties | 76.9 | [3] | 77.8 | [3] | ||||||||
Interest rate derivatives | $ 0 | [4] | $ 0 | [4] | ||||||||
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