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Related Party Transactions - Transactions with Significant Shareholders, their Affiliates and Other Related Parties (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Related Party Transaction [Line Items]
Sales & other services	$ 226	$ 269	$ 322
Research and development expenses	(282)	(235)	(206)
Other purchases	(53)	(60)	(94)
Accounts receivable	53	54	53
Accounts payable	$ 62	$ 42	$ 63

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Other purchases from transactions with related party realized during the period.

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Research and development expenses from transactions with related party realized during the period.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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