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Derivative Financial Instruments, Investments and Fair Value Measurements - Investments (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |
Dividend income | $ 3 | $ 0 | $ 7 | $ 0
Unrealized (loss) gain | (68) | 0 | (20) | 0
Investment loss from marketable securities | $ (65) | $ 0 | $ (13) | $ 0

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- Definition Amount of dividend income on nonoperating securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(a)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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