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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The number of businesses acquired by the entity during the period.

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Acquisitions and Dispositions (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended		12 Months Ended
	Apr. 30, 2012	Feb. 06, 2012	Dec. 31, 2011 Business	Jun. 29, 2012	Apr. 13, 2012
Acquisitions and Dispositions (Textual)
Acquisition of assets and liabilities					$ 10
Amount of goodwill recognized		137		19	8
Goodwill deductible for income tax purposes		69		14
Number of businesses acquired			2
Identifiable intangible assets recognized		32			1
Weighted average useful life for identifiable intangible assets, years	7 years	10 years
Aggregate purchase price of acquisition		$ 205	$ 18