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Property And Equipment (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 107.9	$ 107.1	$ 95.7
Amortization expense on computer software and leasehold improvements	351.8	260.6	204.6
Computer software amortization	313.6	239.5	183.9
Capitalized costs related to the internal development of software	1,561.0	1,316.8
Computer software impairment	47.7	66.8
Continuing Operations
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 105.3	$ 102.9	$ 95.7

For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

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- Definition

For each income statement presented, the amount charged to expense for write-downs of capitalized computer software costs to net realizable value.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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