| **Description Of Business And Summary Of Significant Accounting Policies (Recently Adopted Accounting Standards) (Details) $ in Millions** | 12 Months Ended |
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| Debt issuance costs reclassified as contra-liability [Member]                                                                              |            |
| **Description Of Business And Summary Of Significant Accounting Policies [Line Items]**                                                    |            |
| Debt Issuance Cost                                                                                                                         | $ 9             |
| Reclassification of deferred tax assets from current to non-current [Member]                                                               |            |
| **Description Of Business And Summary Of Significant Accounting Policies [Line Items]**                                                    |            |
| Deferred Tax Assets, Net, Noncurrent                                                                                                       | $ 53            |

| X                                                                                                                                                                                                                                                                                                                                        |
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| - Definition
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
+ References
No definition available.
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| - Definition
Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).
+ References
No definition available.
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| - Definition
Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as noncurrent.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318
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| X                                                                                                                                                                              |
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| X                                                                                                                                                                                          |
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