Aggregate Purchase Price of the Acquisitions (Detail) (USD $) In Millions	Jun. 30, 2011
Schedule of Business Acquisitions, Cost of Acquired Entity [Line Items]
Cash paid, net of cash acquired	$ 577
Existing equity interest	89
Stock options assumed	20
Purchase price of acquired entities	686
Goodwill	553
Intangible assets	196	[1]
Fixed assets	88
Deferred tax assets	42
Other assets acquired	77
Deferred tax liabilities	(61)
Debt	(68)
Other liabilities assumed	(141)	[2]
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net, Total	686
Marketing-related
Schedule of Business Acquisitions, Cost of Acquired Entity [Line Items]
Intangible assets	120
Contract-based
Schedule of Business Acquisitions, Cost of Acquired Entity [Line Items]
Intangible assets	5
Customer-related
Schedule of Business Acquisitions, Cost of Acquired Entity [Line Items]
Intangible assets	$ 71

[1] Acquired intangible assets have estimated useful lives of between 2 and 10 years.

[2] Includes a $38 million contingent liability related to historic tax exposures.