Restructuring Costs (Schedule Of The Components Of Restructuring Costs Included In The Consolidated Statements Of Operations) (Details) (USD $) In Millions | 3 Months Ended | 9 Months Ended | 24 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | |
| Cash severance | $ 202 | ||||
| Restructuring costs | (3) | 60 | (4) | 47 | |
Cash Severance [Member] | |||||
| Cash severance | (14) | (1) | (23) | ||
Cash Severance [Member] | Continuing Operations [Member] | |||||
| Cash severance | (13) | 1 | (18) | ||
Cash Severance [Member] | Discontinued Operations [Member] | |||||
| Cash severance | (1) | (2) | (5) | ||
Asset Impairments [Member] | |||||
| Restructuring costs | 11 | 2 | 11 | ||
Asset Impairments [Member] | Continuing Operations [Member] | |||||
| Restructuring costs | 11 | 2 | 11 | ||
Lease Obligations [Member] | |||||
| Restructuring costs | (3) | 70 | (5) | 70 | |
Lease Obligations [Member] | Continuing Operations [Member] | |||||
| Restructuring costs | (3) | 70 | (5) | 70 | |
Share-Based Awards [Member] | |||||
| Restructuring costs | (7) | (1) | (12) | ||
Share-Based Awards [Member] | Continuing Operations [Member] | |||||
| Restructuring costs | (5) | (1) | (9) | ||
Share-Based Awards [Member] | Discontinued Operations [Member] | |||||
| Restructuring costs | (2) | (3) | |||
Other [Member] | |||||
| Restructuring costs | 1 | 1 | |||
Other [Member] | Continuing Operations [Member] | |||||
| Restructuring costs | 1 | 1 | |||
Continuing Operations [Member] | |||||
| Restructuring costs | (3) | 63 | (2) | 55 | |
Discontinued Operations [Member] | |||||
| Restructuring costs | $ (3) | $ (2) | $ (8) | ||