Intangible Assets (Details) (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Goodwill, Gross Carrying Value	$ 9,098.4		$ 8,386.7
Goodwill, Accumulated Amortization	596.0		577.6
Goodwill, Net Carrying Value	8,502.4	7,470.9
Other identifiable intangible assets subject to amortization
Other identifiable intangible assets subject to amortization, Gross Carrying Value	839.2		633.0
Other identifiable intangible assets subject to amortization, Accumulated Amortization	396.5		354.8
Finite-Lived Intangible Assets, Net, Total	442.7		278.2
Goodwill [Roll Forward]
Goodwill, Beginning Balance	7,809.1	7,641.2
Goodwill, Acquisitions	538.4	97.7
Goodwill, Dispositions	(6.1)	(0.8)
Goodwill, Foreign currency translation	161.0	(267.2)
Goodwill, Ending Balance	8,502.4	7,470.9
Goodwill, Impairment losses	0
Goodwill, Accumulated impairment losses	0
Goodwill, Acquisitions of noncontrolling interests	115.8
Purchased and internally developed software [Member]
Other identifiable intangible assets subject to amortization
Other identifiable intangible assets subject to amortization, Gross Carrying Value	262.4		260.5
Other identifiable intangible assets subject to amortization, Accumulated Amortization	210.5		205.3
Finite-Lived Intangible Assets, Net, Total	51.9		55.2
Customer related and other [Member]
Other identifiable intangible assets subject to amortization
Other identifiable intangible assets subject to amortization, Gross Carrying Value	576.8		372.5
Other identifiable intangible assets subject to amortization, Accumulated Amortization	186.0		149.5
Finite-Lived Intangible Assets, Net, Total	$ 390.8		$ 223.0

Accumulated amortization of Goodwill recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable)

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Noncontrolling interests' share of goodwill of acquired businesses.

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The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

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Gross amount, as of the balance sheet date, of the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable), in excess of the fair value of net assets acquired in one or more business combination transactions.

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The accumulated impairment losses related to goodwill as of the balance sheet date.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The increase (decrease) to the recorded value of goodwill for foreign currency translation adjustments.

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Write-off of the carrying amount of goodwill associated with all or a portion of a reporting unit that is sold in the period.

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