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Accumulated Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss), before reclassification, net of tax | $ (849) | $ 376 |
Other adjustments. before tax |  |  | $ (11)
Other adjustments, tax |  |  | (2)
Other adjustments, net of tax |  |  | (9)
Other comprehensive income (loss), before tax | (557) | 840 | (225)
Other comprehensive income (loss), tax | 182 | 305 | (170)
Other comprehensive (loss) income, net of tax | (739) | 535 | (55)
Foreign Currency Translation Adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss), before reclassification, before tax | (1,198) | (389) | 559
Other comprehensive income (loss), before reclassification, tax | 22 | 0 | 0
Other comprehensive income (loss), before reclassification, net of tax | (1,220) | (389) | 559
Other comprehensive (loss) income, net of tax | (1,220) | (389) |
Pension and Post-Retirement Plans Losses |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss), before reclassification, net of tax | 371 | 765 |
Reclassification from AOCI, before tax | 150 | 213 | 162
Reclassification from AOCI, tax | 38 | 54 | 37
Reclassification from AOCI, net of tax | 112 | 159 | 125
Other comprehensive income (loss), before tax | 641 | 1,229 | (784)
Other comprehensive income (loss), tax | 160 | 305 | (170)
Other comprehensive (loss) income, net of tax | 481 | 924 | (614)
Prior service credits |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassification from AOCI, before tax | (2) | (2) | (2)
Reclassification from AOCI, tax | 0 | 0 | (1)
Reclassification from AOCI, net of tax | (2) | (2) | (1)
Net actuarial losses |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassification from AOCI, before tax | 150 | 208 | 161
Reclassification from AOCI, tax | 38 | 52 | 37
Reclassification from AOCI, net of tax | 112 | 156 | 124
Effect of curtailment |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassification from AOCI, before tax |  | 2 |
Reclassification from AOCI, tax |  | 1 |
Reclassification from AOCI, net of tax |  | 1 |
Effect of settlement |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassification from AOCI, before tax | 2 | 5 | 3
Reclassification from AOCI, tax | 0 | 1 | 1
Reclassification from AOCI, net of tax | 2 | 4 | 2
Net gains arising during period |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss), before reclassification, before tax | 203 | 1,003 | (772)
Other comprehensive income (loss), before reclassification, tax | 51 | 249 | (177)
Other comprehensive income (loss), before reclassification, net of tax | 152 | 754 | (595)
Foreign currency translation adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss), before reclassification, before tax | 285 | 19 | (163)
Other comprehensive income (loss), before reclassification, tax | 71 | 4 | (28)
Other comprehensive income (loss), before reclassification, net of tax | 214 | 15 | $ (135)
Other adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other comprehensive income (loss), before reclassification, before tax | 3 | (6) |
Other comprehensive income (loss), before reclassification, tax | 0 | (2) |
Other comprehensive income (loss), before reclassification, net of tax | $ 3 | $ (4) |

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