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Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2020
Equity [Abstract] |
Summary of Changes in Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income The following table summarizes the changes in AOCI by component, net of tax (in millions):
|  | Foreign Currency Translation |  | Unrealized Gains and Losses on Available-for-Sale Debt Securities |  | Unrealized Gains and Losses on Cash Flow Hedges |  | Total
Balance at December 31, 2019 |  | $ | 53 |  |  | $ | 1 |  |  | $ | 31 |  |  | $ | 85 |
Net unrealized gain (loss) |  | (35) |  |  | 51 |  |  | 21 |  |  | 37 |
Reclassifications to net income |  | — |  |  | (13) |  |  | (39) |  |  | (52) |
Net current period other comprehensive income (loss) |  | (35) |  |  | 38 |  |  | (18) |  |  | (15) |
Balance at June 30, 2020 |  | $ | 18 |  |  | $ | 39 |  |  | $ | 13 |  |  | $ | 70 |
|  | Foreign Currency Translation |  | Unrealized Gains and Losses on Available-for-Sale Debt Securities |  | Unrealized Gains and Losses on Cash Flow Hedges |  | Total
Balance at December 31, 2018 |  | $ | 47 |  |  | $ | (52) |  |  | $ | 85 |  |  | $ | 80 |
Net unrealized gain |  | 8 |  |  | 49 |  |  | 29 |  |  | 86 |
Reclassifications to net income |  | — |  |  | — |  |  | (64) |  |  | (64) |
Net current period other comprehensive income (loss) |  | 8 |  |  | 49 |  |  | (35) |  |  | 22 |
Balance at June 30, 2019 |  | $ | 55 |  |  | $ | (3) |  |  | $ | 50 |  |  | $ | 102 |

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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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