Income Taxes (Deferred Tax Assets (Liabilities) Classification) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Prepaid expenses and other	$ 273.5	$ 319.0
Other assets	827.2	759.5
Total deferred tax assets	1,100.7	1,078.5
Income taxes	(6.1)	(19.3)
Long-term income taxes	(27.2)	(24.5)
Total deferred tax liabilities	(33.3)	(43.8)
Net deferred tax assets	$ 1,067.4	$ 1,034.7

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.

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- Definition

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