|
Restructuring Charges (Summary of Restructuring Charges) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2013
|
Sep. 30, 2012
|
|
| Restructuring Cost and Reserve [Line Items] | |||
| Total restructuring charges | $ 10 | $ 9 | $ 36 |
|
Severance [Member]
|
|||
| Restructuring Cost and Reserve [Line Items] | |||
| Total restructuring charges | 6 | 18 | |
|
Facilities-related [Member]
|
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| Restructuring Cost and Reserve [Line Items] | |||
| Total restructuring charges | 1 | 10 | |
|
Asset impairments [Member]
|
|||
| Restructuring Cost and Reserve [Line Items] | |||
| Total restructuring charges | 1 | 6 | |
|
Other Restructuring [Member]
|
|||
| Restructuring Cost and Reserve [Line Items] | |||
| Total restructuring charges | $ 1 | $ 2 | |