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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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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of liabilities assumed at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisition - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Open Solutions Inc	Sep. 30, 2013 Open Solutions Inc	Jan. 14, 2013 Open Solutions Inc
Business Acquisition [Line Items]
Total cash purchase price				$ 55
Assumption of debt					960
Goodwill	5,217	4,705			510
Goodwill deductible for tax purposes					161
Revenue			69	204
Non cash impairment charge associated with merger and integration	$ 30			$ 30