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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Changes in Accumulated Other Comprehensive Income/(Loss) |  |
Total period activity | $ (327) | $ 58
Derivative Instruments |  |
Changes in Accumulated Other Comprehensive Income/(Loss) |  |
Balance at beginning of period | (259) | (177)
Reclassification adjustments | 2 | 2
Unrealized loss on hedges | (79) | (23)
Total period activity | (77) | (21)
Balance at end of period | (336) | (198)
Translation Adjustments |  |
Changes in Accumulated Other Comprehensive Income/(Loss) |  |
Balance at beginning of period | (674) | (853)
Currency translation adjustments | (251) | 78
Total period activity | (251) | 78
Balance at end of period | (925) | (775)
Other |  |
Changes in Accumulated Other Comprehensive Income/(Loss) |  |
Other | 1 | 1
Total period activity | 1 | 1
Balance at end of period | 1 | 1
Total |  |
Changes in Accumulated Other Comprehensive Income/(Loss) |  |
Balance at beginning of period | (933) | (1,030)
Reclassification adjustments | 2 | 2
Unrealized loss on hedges | (79) | (23)
Currency translation adjustments | (251) | 78
Other | 1 | 1
Total period activity | (327) | 58
Balance at end of period | $ (1,260) | $ (972)

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- Definition Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 + Details
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- Definition Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 + Details
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- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b,c) -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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