| **Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions** | 12 Months Ended |
|--------------------------------------------------------------------------------------------|-----------------|
||
| **Operating Loss Carryforwards [Line Items]**                                              |            |   |   |
| Unrecognized tax benefits, beginning balance                                               | $ 254           | $ 232 | $ 297 |
| Increases in unrecognized tax benefits related to prior year tax positions                 | 33              | 9 | 10 |
| Decreases in unrecognized tax benefits related to prior year tax positions                 | (4)             | (14) | (79) |
| Increases in unrecognized tax benefits related to current year tax positions               | 63              | 50 | 44 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities     | (10)            | (6) | (29) |
| Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations  | (4)             | (7) | (9) |
| Changes in unrecognized tax benefits due to foreign currency translation                   | (1)             | (10) | (2) |
| Unrecognized tax benefits, ending balance                                                  | $ 331           | $ 254 | $ 232 |

| X                                                                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Unrecognized Tax Benefits Changes Resulting From Foreign Currency Translation
+ References
No definition available.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.
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| - Definition
Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.
+ References
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