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Schedule of Restructuring Costs (Detail) (2012-2014 Restructuring Program, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			$ 68
Charges	54	48	96	88
Cash spent	(38)		(66)
Non-cash settlements	(11)		(24)
Balance at end of period	74		74
Severance And Related Costs
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			68
Charges			69
Cash spent			(66)
Non-cash settlements		(9)	3	(9)
Balance at end of period	74		74
Asset Write-Downs
Restructuring Cost and Reserve [Line Items]
Charges			27
Non-cash settlements			$ (27)

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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