The changes in accumulated other comprehensive income (loss) by component, net of tax, for the three months ended December 31, 2020 and 2019 are as follows (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | Unrealized Net Gains (Losses) on Available-for-Sale Securities | | Unrealized Net Gains (Losses) on Derivative Instruments | | Foreign Currency Translation Adjustments | | Total | Balances as of September 30, 2020 | $ | 4 | | | $ | (41) | | | $ | (52) | | | $ | (89) | | Other comprehensive income (loss) before reclassifications | (2) | | | (46) | | | 23 | | | (25) | | Amounts reclassified from accumulated other comprehensive income (loss) | — | | | 20 | | | — | | | 20 | | Total other comprehensive income (loss), net of tax
| (2) | | | (26) | | | 23 | | | (5) | | Balances as of December 31, 2020 | $ | 2 | | | $ | (67) | | | $ | (29) | | | $ | (94) | |
| | | | | | | | | | | | | | | | | | | | | | | | | Unrealized Net Gains (Losses) on Available-for-Sale Securities | | Unrealized Net Gains (Losses) on Derivative Instruments | | Foreign Currency Translation Adjustments | | Total | Balances as of September 30, 2019 | $ | 2 | | | $ | 47 | | | $ | (59) | | | $ | (10) | | Other comprehensive income (loss) before reclassifications | (1) | | | (12) | | | 7 | | | (6) | | Amounts reclassified from accumulated other comprehensive income (loss) | — | | | (17) | | | — | | | (17) | | Total other comprehensive income (loss), net of tax
| (1) | | | (29) | | | 7 | | | (23) | | Balances as of December 31, 2019 | $ | 1 | | | $ | 18 | | | $ | (52) | | | $ | (33) | |
The changes in accumulated other comprehensive income (loss) by component, net of tax, for the nine months ended December 31, 2020 and 2019 are as follows (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | Unrealized Net Gains (Losses) on Available-for-Sale Securities | | Unrealized Net Gains (Losses) on Derivative Instruments | | Foreign Currency Translation Adjustments | | Total | Balances as of March 31, 2020 | $ | (4) | | | $ | 39 | | | $ | (85) | | | $ | (50) | | Other comprehensive income (loss) before reclassifications | 6 | | | (120) | | | 56 | | | (58) | | Amounts reclassified from accumulated other comprehensive income (loss) | — | | | 14 | | | — | | | 14 | | Total other comprehensive income (loss), net of tax
| 6 | | | (106) | | | 56 | | | (44) | | Balances as of December 31, 2020 | $ | 2 | | | $ | (67) | | | $ | (29) | | | $ | (94) | |
| | | | | | | | | | | | | | | | | | | | | | | | | Unrealized Net Gains (Losses) on Available-for-Sale Securities | | Unrealized Net Gains (Losses) on Derivative Instruments | | Foreign Currency Translation Adjustments | | Total | Balances as of March 31, 2019 | $ | (1) | | | $ | 22 | | | $ | (51) | | | $ | (30) | | Other comprehensive income (loss) before reclassifications | 3 | | | 47 | | | (1) | | | 49 | | Amounts reclassified from accumulated other comprehensive income (loss) | (1) | | | (51) | | | — | | | (52) | | Total other comprehensive income (loss), net of tax
| 2 | | | (4) | | | (1) | | | (3) | | Balances as of December 31, 2019 | $ | 1 | | | $ | 18 | | | $ | (52) | | | $ | (33) | |
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