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.

+ References+ Details

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.

+ References+ Details

Restructuring of Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 Person	Mar. 31, 2011	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6	$ 30
Lease termination costs		20
Estimated reduction of employees over the next two years	1,200
Restructuring accruals	31		33
Fiscal Year 2012
Restructuring Cost and Reserve [Line Items]
Restructuring accruals	18
There After
Restructuring Cost and Reserve [Line Items]
Restructuring accruals	13
Employee Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	1
Restructuring accruals	28		30
Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	28
Restructuring accruals	3		3
Accelerated Depreciation/Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1