Goodwill and Intangible Assets (Schedule Of Other Intangible Asset Balances For Continuing Operations) (Details) - USD ($) $ in Millions |
Dec. 31, 2018 |
Dec. 31, 2017 |
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Finite Lived and Indefinite Lived Intangible Assets by Major Class [Line Items] | |||||
Gross | $ 345 | $ 344 | |||
Accumulated Amortization | (187) | (179) | |||
Net | 158 | 165 | |||
Customer relationships [Member] | |||||
Finite Lived and Indefinite Lived Intangible Assets by Major Class [Line Items] | |||||
Gross | 173 | 172 | |||
Accumulated Amortization | (165) | (160) | |||
Net | 7 | 12 | |||
Other [Member] | |||||
Finite Lived and Indefinite Lived Intangible Assets by Major Class [Line Items] | |||||
Gross | 32 | 32 | |||
Accumulated Amortization | (22) | (19) | |||
Net | 10 | 13 | |||
Trade names [Member] | |||||
Finite Lived and Indefinite Lived Intangible Assets by Major Class [Line Items] | |||||
Gross | [1] | 140 | 140 | ||
Net | [1] | $ 140 | $ 140 | ||
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