Restructuring (Narrative) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011
Restructuring costs	$ 6
Cash payments	14
Restructuring Plan 2010 [Member]
Restructuring costs	7
Total restructuring costs under the plan	16
Restructuring Plan 2010 [Member] | Facility-Related [Member]
Restructuring liability expected to be paid	6
Restructuring Plan 2010 [Member] | Personnel-Related [Member]
Restructuring liability expected to be paid	1
Restructuring Plan 2008 [Member]
Cash payments	6
Total restructuring costs under the plan	124
Restructuring Plan 2008 [Member] | Facility-Related [Member]
Restructuring liability expected to be paid	5
Previously recorded facility-related restructuring expenses	1
Facility-Related [Member]
Cash payments	6
Personnel-Related [Member]
Cash payments	$ 8	[1]

[1] As of September 30, 2011, the Company had notified substantially all of the employees related to such costs.