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Equity (Tables) | 9 Months Ended
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Sep. 30, 2019
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following tables present changes in the accumulated balances for each component of other comprehensive income (loss) (in millions):
|  | Changes in Accumulated Other Comprehensive Income (Loss) by Component
|  | Foreign currency translation adjustments |  | Comprehensive income from equity method investment |  | Employee benefit plans adjustments |  | Total
Balance, as of December 31, 2018 |  | $ | (227 | ) |  | $ | 2 |  |  | $ | (90 | ) |  | $ | (315 | )
Other comprehensive income (loss) |  | (33 | ) |  | (1 | ) |  | — |  |  | (34 | )
Income tax benefit (expense) |  | 1 |  |  | — |  |  | — |  |  | 1 |
Net current period other comprehensive income (loss) |  | (32 | ) |  | (1 | ) |  | — |  |  | (33 | )
Balance, as of September 30, 2019 |  | $ | (259 | ) |  | $ | 1 |  |  | $ | (90 | ) |  | $ | (348 | )
|  | Changes in Accumulated Other Comprehensive Income (Loss) by Component
|  | Foreign currency translation adjustments |  | Comprehensive income from equity method investment |  | Employee benefit plans adjustments |  | Total
Balance, as of June 30, 2019 |  | $ | (220 | ) |  | $ | 1 |  |  | $ | (90 | ) |  | $ | (309 | )
Other comprehensive income (loss) |  | (40 | ) |  | — |  |  | — |  |  | (40 | )
Income tax benefit (expense) |  | 1 |  |  | — |  |  | — |  |  | 1 |
Net current period other comprehensive income (loss) |  | (39 | ) |  | — |  |  | — |  |  | (39 | )
Balance, as of September 30, 2019 |  | $ | (259 | ) |  | $ | 1 |  |  | $ | (90 | ) |  | $ | (348 | )
|  | Changes in Accumulated Other Comprehensive Income (Loss) by Component
|  | Foreign currency translation adjustments |  | Comprehensive income from equity method investment |  | Employee benefit plans adjustments |  | Total
Balance, as of December 31, 2017 |  | $ | (136 | ) |  | $ | 2 |  |  | $ | (89 | ) |  | $ | (223 | )
Other comprehensive income (loss) |  | (52 | ) |  | — |  |  | — |  |  | (52 | )
Income tax benefit (expense) |  | 1 |  |  | — |  |  | — |  |  | 1 |
Net current period other comprehensive income (loss) |  | (51 | ) |  | — |  |  | — |  |  | (51 | )
Balance, as of September 30, 2018 |  | $ | (187 | ) |  | $ | 2 |  |  | $ | (89 | ) |  | $ | (274 | )
|  | Changes in Accumulated Other Comprehensive Income (Loss) by Component
|  | Foreign currency translation adjustments |  | Comprehensive income from equity method investment |  | Employee benefit plans adjustments |  | Total
Balance, as of June 30, 2018 |  | $ | (178 | ) |  | $ | 2 |  |  | $ | (89 | ) |  | $ | (265 | )
Other comprehensive income (loss) |  | (9 | ) |  | — |  |  | — |  |  | (9 | )
Income tax benefit (expense) |  | — |  |  | — |  |  | — |  |  | — |
Net current period other comprehensive income (loss) |  | (9 | ) |  | — |  |  | — |  |  | (9 | )
Balance, as of September 30, 2018 |  | $ | (187 | ) |  | $ | 2 |  |  | $ | (89 | ) |  | $ | (274 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: 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=118930883&loc=SL7669686-108580 + Details
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