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Components of Deferred Tax Assets (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Deferred Tax Assets, Net [Abstract] |  |
Postretirement/post-employment benefits | $ 40.4 | $ 42.4
Deferred compensation | 192.4 | 205.2
Pension costs | 27.0 | 14.2
Basis differences in fixed assets | 26.9 | 81.8
Rent | 50.2 | 38.6
Interest | 66.9 | 54.8
Accruals and reserves | 51.1 | 55.6
Allowance for doubtful accounts | 9.2 | 8.1
Basis differences in intangible assets | (364.9) | (330.1)
Investments in equity securities | (5.2) | 30.8
Tax loss/tax credit carry forwards | 449.7 | 478.1
Restructuring and other reorganization-related costs | 1.2 | 2.0
Other | 88.3 | 92.2
Total Deferred Tax Assets, Net | 633.2 | 773.7
Valuation allowance | (392.9) | (489.9)
Net Deferred Tax Assets | $ 240.3 | $ 283.8

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