|
Restructuring Charges - Components of Restructuring Charges Less Releases Recorded in Liabilities (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | $ 99 | $ 58 | $ (33) |
|
Personnel lay-off costs addition liability [Member]
|
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| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | 101 | 66 | 5 |
|
Impairment of assets [Member]
|
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| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | 2 | ||
|
Lease and Contract Terminations [Member]
|
|||
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | 2 | ||
|
Release of provisions/accruals [Member]
|
|||
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | $ (4) | $ (8) | $ (40) |