The following table summarizes the changes in accumulated balances of other comprehensive income for the three months ended June 30, 2015:
| | | | | | | | | | | | | | | | | | | | | | Unrealized Gains (Losses) on Cash Flow Hedges | | Unrealized Gains (Losses) on Investments | | Foreign Currency Translation | | Estimated tax (expense) benefit | | Total | | (In millions) | Beginning balance | $ | 190 |
| | $ | — |
| | $ | (49 | ) | | $ | 1 |
| | $ | 142 |
| Other comprehensive income (loss) before reclassifications | (62 | ) | | (2 | ) | | 9 |
| | (1 | ) | | $ | (56 | ) | Amount of gain reclassified from accumulated other comprehensive income | 62 |
| | — |
| | — |
| | — |
| | $ | 62 |
| Net current period other comprehensive income | (124 | ) | | (2 | ) | | 9 |
| | (1 | ) | | (118 | ) | Ending balance | $ | 66 |
| | $ | (2 | ) | | $ | (40 | ) | | $ | — |
| | $ | 24 |
|
The following table summarizes the changes in accumulated balances of other comprehensive income for the three months ended June 30, 2014:
| | | | | | | | | | | | | | | | | | | | | | Unrealized Gains (Losses) on Cash Flow Hedges | | Unrealized Gains (Losses) on Investments | | Foreign Currency Translation | | Estimated tax (expense) benefit | | Total | | (In millions) | Beginning balance | $ | (81 | ) | | $ | — |
| | $ | 26 |
| | $ | 1 |
| | $ | (54 | ) | Other comprehensive income (loss) before reclassifications | (12 | ) | | — |
| | (2 | ) | | — |
| | $ | (14 | ) | Amount of gain reclassified from accumulated other comprehensive income | (23 | ) | | — |
| | — |
| | — |
| | $ | (23 | ) | Net current period other comprehensive income | 11 |
| | — |
| | (2 | ) | | — |
| | 9 |
| Ending balance | $ | (70 | ) | | $ | — |
| | $ | 24 |
| | $ | 1 |
| | $ | (45 | ) |
The following table summarizes the changes in accumulated balances of other comprehensive income for the six months ended June 30, 2015:
| | | | | | | | | | | | | | | | | | | | | | Unrealized Gains (Losses) on Cash Flow Hedges | | Unrealized Gains (Losses) on Investments | | Foreign Currency Translation | | Estimated tax (expense) benefit | | Total | | (In millions) | Beginning balance | $ | 126 |
| | $ | — |
| | $ | (16 | ) | | $ | — |
| | $ | 110 |
| Other comprehensive income (loss) before reclassifications | 52 |
| | (2 | ) | | (24 | ) | | — |
| | $ | 26 |
| Amount of gain reclassified from accumulated other comprehensive income | 112 |
| | — |
| | — |
| | — |
| | $ | 112 |
| Net current period other comprehensive income | (60 | ) | | (2 | ) | | (24 | ) | | — |
| | (86 | ) | Ending balance | $ | 66 |
| | $ | (2 | ) | | $ | (40 | ) | | $ | — |
| | $ | 24 |
|
The following table summarizes the changes in accumulated balances of other comprehensive income for the six months ended June 30, 2014: | | | | | | | | | | | | | | | | | | Unrealized Gains (Losses) on Cash Flow Hedges | | Foreign Currency Translation | | Estimated tax (expense) benefit | | Total | | (In millions) | Beginning balance | $ | (91 | ) | | $ | 26 |
| | $ | 4 |
| | $ | (61 | ) | Other comprehensive loss before reclassifications | (19 | ) | | (2 | ) | | (3 | ) | | $ | (24 | ) | Amount of loss reclassified from accumulated other comprehensive income | (40 | ) | | — |
| | — |
| | $ | (40 | ) | Net current period other comprehensive income | 21 |
| | (2 | ) | | (3 | ) | | 16 |
| Ending balance | $ | (70 | ) | | $ | 24 |
| | $ | 1 |
| | $ | (45 | ) |
|