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Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before tax | $ (628) | $ 48 | $ (711) | $ (37)
Other comprehensive income (loss), tax | 56 | 4 | 77 | 6
Other comprehensive (loss) income, net of tax | (684) | 44 | (788) | (43)
Foreign currency translation adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before reclassification, before tax | (864) | 24 | (1,033) | (67)
Other comprehensive income (loss), before reclassification, tax | 0 | 0 | 0 | 0
Other comprehensive income (loss), before reclassification, net of tax | (864) | 24 | (1,033) | (67)
Reclassification from AOCI, net of tax | 0 | 0 | 0 | 0
Other comprehensive (loss) income, net of tax | (864) | 24 | (1,033) | (67)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before reclassification, net of tax | 154 | (16) | 189 | (52)
Reclassification from AOCI, before Tax | 37 | 51 | 76 | 103
Reclassification from AOCI, tax | 11 | 15 | 20 | 27
Reclassification from AOCI, net of tax | 26 | 36 | 56 | 76
Other comprehensive income (loss), before tax | 236 | 24 | 322 | 30
Other comprehensive income (loss), tax | 56 | 4 | 77 | 6
Other comprehensive (loss) income, net of tax | 180 | 20 | 245 | 24
Prior service credits |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Reclassification from AOCI, before Tax | (1) | (1) | (1) | (1)
Reclassification from AOCI, tax | 0 | 0 | 0 | 0
Reclassification from AOCI, net of tax | (1) | (1) | (1) | (1)
Net actuarial losses |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Reclassification from AOCI, before Tax | 38 | 52 | 77 | 104
Reclassification from AOCI, tax | 11 | 15 | 20 | 27
Reclassification from AOCI, net of tax | 27 | 37 | 57 | 77
Foreign currency translation adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before reclassification, before tax | 187 | (44) | 252 | (81)
Other comprehensive income (loss), before reclassification, tax | 44 | (12) | 60 | (20)
Other comprehensive income (loss), before reclassification, net of tax | 143 | (32) | 192 | (61)
Effect of remeasurement |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before reclassification, before tax | 10 | 15 | 10 | 13
Other comprehensive income (loss), before reclassification, tax | 1 | 1 | 1 | 1
Other comprehensive income (loss), before reclassification, net of tax | 9 | 14 | 9 | 12
Effect of settlement |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before reclassification, before tax | 2 | 2 | 2 | 2
Other comprehensive income (loss), before reclassification, tax | 0 | 0 | 0 | 0
Other comprehensive income (loss), before reclassification, net of tax | $ 2 | $ 2 | 2 | 2
Other adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other comprehensive income (loss), before reclassification, before tax |  |  | (18) | (7)
Other comprehensive income (loss), before reclassification, tax |  |  | (4) | (2)
Other comprehensive income (loss), before reclassification, net of tax |  |  | $ (14) | $ (5)

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