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Litigation And Other Contingencies (Schedule Of Unconditional Purchase Obligations) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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| Loss Contingencies [Line Items] | ||||
| 2012 | $ 243 | [1] | ||
| 2013-2016 | 660 | [1] | ||
| 2017 and Beyond | 410 | [1] | ||
| Total | 1,313 | [1] | ||
| Present value of these commitments | 1,084 | |||
| Undiscounted unconditional purchase obligations | 1,313 | |||
| Imputed interest | 229 | |||
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Equity Company Obligations [Member]
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| Loss Contingencies [Line Items] | ||||
| Undiscounted unconditional purchase obligations | $ 856 | |||
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