|
Restructuring Charges (Summary of Restructuring Charges) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
|
| Restructuring Cost and Reserve [Line Items] | ||
| Total restructuring charges | $ 9 | $ 9 |
|
Severance [Member]
|
||
| Restructuring Cost and Reserve [Line Items] | ||
| Total restructuring charges | 6 | 5 |
|
Facilities-related [Member]
|
||
| Restructuring Cost and Reserve [Line Items] | ||
| Total restructuring charges | 1 | |
|
Asset impairments [Member]
|
||
| Restructuring Cost and Reserve [Line Items] | ||
| Total restructuring charges | 1 | 4 |
|
Other Restructuring [Member]
|
||
| Restructuring Cost and Reserve [Line Items] | ||
| Total restructuring charges | $ 1 | |