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Employee Benefits (Schedule Of Amounts Recognized In The Consolidated Balance Sheet) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Noncurrent liabilities | $ (391) | $ (360)
Other Postretirement Benefits Plan [Member] | United States [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Current liabilities | (8) | (8)
Noncurrent liabilities | (55) | (57)
Net amount recognized | (63) | (65)
Other Postretirement Benefits Plan [Member] | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Current liabilities | 0 | 0
Noncurrent liabilities | (5) | (5)
Net amount recognized | (5) | (5)
Pension Plan [Member] | United States [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Current liabilities | (2) | (2)
Noncurrent liabilities | (183) | (175)
Net amount recognized | (185) | (177)
Pension Plan [Member] | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Current liabilities | (4) | (2)
Noncurrent liabilities | (148) | (123)
Net amount recognized | $ (152) | $ (125)

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