Business Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) (Arbitron, USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Arbitron
Business Acquisition [Line Items]
Cash paid for Arbitron common stock	$ 1,296
Accrued payment for directors’ and employees’ equity awards pertaining to pre-merger service	42
Accrued dividend payment on Arbitron common stock	3
Fair value of investment immediately before acquisition	75
Total	1,416
Identifiable assets acquired and liabilities assumed:
Cash	136
Other current assets	115
Property and equipment	32
Goodwill	931
Amortizable intangible assets	517
Other long term assets	3
Deferred revenue	(47)
Other current liabilities	(53)
Deferred tax liabilities	(200)
Other long term liabilities	(18)
Total	$ 1,416

Accrued dividend payment on acquired commen stock.

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Accrued payment for equity awards pre merger service.

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Business acquisition purchase price.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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