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Accumulated Other Comprehensive Income - Amounts Reclassified (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |
Other operating expenses | $ (749) | $ (779)
Interest expense | (263) | (253)
Income taxes | 60 | (93)
NET INCOME | 74 | 320
Reclassifications from AOCI | Gains & Losses on Cash Flow Hedges |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |
NET INCOME | 0 | 1
Reclassifications from AOCI | Gains & Losses on Cash Flow Hedges | Long-term debt |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |
Interest expense | 0 | 1
Reclassifications from AOCI | Net prior service costs |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |
Other operating expenses | (23) | (7)
Income taxes | 5 | 1
NET INCOME | $ (18) | $ (6)

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 + Details
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