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Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Accumulated other comprehensive income (loss), beginning of period |  | $ (471) | $ (1,215) |
Accumulated other comprehensive income (loss), end of period |  | (694) | (471) | $ (1,215)
Spin-Off of Delphi Technologies |  | (25) | (1,561) |
Mechatronics Business |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, net of tax |  |  |  | (29)
Designated as Hedging Instrument | Net Investment Hedging |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Gain (loss) on Net Investment Hedge, net of tax |  | 67 | (177) | 67
Foreign currency translation adjustments |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Accumulated other comprehensive income (loss), beginning of period |  | (369) | (799) | (661)
Aggregate adjustment for the year | [1] | (186) | 305 | (138)
Accumulated other comprehensive income (loss), end of period |  | (555) | (369) | (799)
Spin-Off of Delphi Technologies |  | 0 | 125 | 0
Unrealized gains (losses) on derivatives |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Accumulated other comprehensive income (loss), beginning of period |  | 4 | (11) | (106)
Other comprehensive income before reclassifications (net of tax effect) |  | (36) | 14 | (1)
Reclassification to income (net of tax effect) |  | (3) | 1 | 96
Accumulated other comprehensive income (loss), end of period |  | (35) | 4 | (11)
Net tax effect of Other comprehensive income before reclassifications |  | 3 | 1 | 23
Net tax effect of Reclassification Adjustment from AOCI on Derivatives |  | 3 | 6 | 30
Pension and postretirement plans |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Accumulated other comprehensive income (loss), beginning of period |  | (106) | (405) | (266)
Other comprehensive income before reclassifications (net of tax effect) |  | (11) | (19) | (150)
Reclassification to income (net of tax effect) |  | 13 | 30 | 11
Accumulated other comprehensive income (loss), end of period |  | (104) | (106) | (405)
Net tax effect of Other comprehensive income before reclassifications |  | 3 | 3 | 32
Net tax effect of Reclassification Adjustment from AOCI, Pension and Other Postretirement Plans |  | 2 | 6 | 1
Spin-Off of Delphi Technologies |  | $ 0 | $ 288 | $ 0
[1] | Includes $67 million of gains, $177 million of losses and $67 million of gains for the years ended December 31, 2018, 2017 and 2016, respectively, related to non-derivative net investment hedges. Refer to Note 17. Derivatives and Hedging Activities for further description of the Company’s net investment hedges. The year ended December 31, 2016 also includes $29 million of accumulated currency translation adjustment losses reclassified to net income as a result of the sale of the Company’s Mechatronics business, as further described in Note 20. Acquisitions and Divestitures.

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 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=114867106&loc=SL7669686-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e681-108580 + Details
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