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Restructuring and Transaction Costs - (Schedule Of Restructuring And Transaction Costs) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring cost | $ 49 | $ 84 | $ 97
Other Restructuring [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring cost | 41 | $ 84 | $ 97
Transaction Costs [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring cost | $ 8 |  |

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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. + Details
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Details
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- Details
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