The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Restructuring of Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012 Person	Jun. 30, 2011	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 20	$ 6	$ 11	$ 30	$ 26	$ 41
Lease termination costs				20
Estimated reduction of employees over the next two years					1,200
Restructuring accruals	42	31			42		33
Fiscal Year 2012
Restructuring Cost and Reserve [Line Items]
Restructuring accruals	17				17
There After
Restructuring Cost and Reserve [Line Items]
Restructuring accruals	25				25
Employee Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7	4	7	1
Restructuring accruals	29	28			29		30
Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	12	2	3	28
Restructuring accruals	13	3			13		3
Accelerated Depreciation/Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 1		$ 1	$ 1