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Accumulated Other Comprehensive Income/(Loss) (Tables) | 9 Months Ended
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Sep. 30, 2020
Accumulated Other Comprehensive Income/(Loss) [Abstract] |
After-Tax Components Of Accumulated Other Comprehensive Loss | Reclassifications out of accumulated other comprehensive income/(loss) for the three and nine months ended September 30, 2020, and 2019, were as follows (net of tax):
Millions | Defined ‎benefit ‎plans | Foreign ‎currency ‎translation | Total
Balance at July 1, 2020 | $ | (1,110) | $ | (262) | $ | (1,372)
Other comprehensive income/(loss) before reclassifications |  | - |  | 3 |  | 3
Amounts reclassified from accumulated other comprehensive income/(loss) [a] |  | 18 |  | - |  | 18
Net quarter-to-date other comprehensive income/(loss), ‎net of taxes of ($6) million |  | 18 |  | 3 |  | 21
Balance at September 30, 2020 | $ | (1,092) | $ | (259) | $ | (1,351)
Balance at July 1, 2019 | $ | (1,100) | $ | (198) | $ | (1,298)
Other comprehensive income/(loss) before reclassifications |  | - |  | (18) |  | (18)
Amounts reclassified from accumulated other comprehensive income/(loss) [a] |  | 11 |  | - |  | 11
Net quarter-to-date other comprehensive income/(loss), ‎net of taxes of ($4) million |  | 11 |  | (18) |  | (7)
Balance at September 30, 2019 | $ | (1,089) | $ | (216) | $ | (1,305)
[a]The accumulated other comprehensive income/(loss) reclassification components are 1) prior service cost/(credit) and 2) net actuarial loss which are both included in the computation of net periodic pension cost. See Note 5 Retirement Plans for additional details. ‎
Millions | Defined ‎benefit ‎plans | Foreign ‎currency ‎translation | Total
Balance at January 1, 2020 | $ | (1,150) | $ | (206) | $ | (1,356)
Other comprehensive income/(loss) before reclassifications |  | 3 |  | (53) |  | (50)
Amounts reclassified from accumulated other comprehensive income/(loss) [a] |  | 55 |  | - |  | 55
Net year-to-date other comprehensive income/(loss), ‎net of taxes of ($18) million |  | 58 |  | (53) |  | 5
Balance at September 30, 2020 | $ | (1,092) | $ | (259) | $ | (1,351)
Balance at January 1, 2019 | $ | (1,192) | $ | (223) | $ | (1,415)
Other comprehensive income/(loss) before reclassifications |  | (25) |  | 7 |  | (18)
Amounts reclassified from accumulated other comprehensive income/(loss) [a] |  | 36 |  | - |  | 36
OPEB Plan amendment (Note 5) |  | 92 |  | - |  | 92
Net year-to-date other comprehensive income/(loss), ‎net of taxes of ($35) million |  | 103 |  | 7 |  | 110
Balance at September 30, 2019 | $ | (1,089) | $ | (216) | $ | (1,305)
[a]The accumulated other comprehensive income/(loss) reclassification components are 1) prior service cost/(credit) and 2) net actuarial loss which are both included in the computation of net periodic pension cost. See Note 5 Retirement Plans for additional details.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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