NOTES TO CONSOLIDATED FINANCIAL STATEMENTS OF AMERICAN AIRLINES GROUP INC. 11. Accumulated Other Comprehensive Loss 12. Commitments, Contingencies and Guarantees (a) Aircraft, Engine and Other Purchase Commitments The components of AOCI are as follows (in millions): Reclassifications out of AOCI for the years ended December 31, 2019 and 2018 are as follows (in millions): Amounts allocated to other comprehensive income for income taxes as further described in Note 7 will remain in AOCI until we cease all related activities, such as termination of the pension plan. Under all of our aircraft and engine purchase agreements, our total future commitments as of December 31, 2019 are expected to be as follows (approximately, in millions): 2020 2021 2022 2023 2024 2025 and Thereafter Total Payments for aircraft commitments and certain engines  (1) $ 1,629 $ 750 $ 1,599 $ 1,543 $ 2,574 $ 4,855 $ 12,950 Pension, Retiree Medical and Other Postretirement Benefits Unrealized Gain (Loss) on Investments Income Tax Benefit (Provision)  (1) Total Balance at December 31, 2017 $ (4,523 ) $ (1 ) $ (1,252 ) $ (5,776 ) Other comprehensive income (loss) before reclassifications (62) (4) 15 (51) Amounts reclassified from AOCI (88 ) — 19 $^{(2)}$  (69 ) Net current-period other comprehensive income (loss) (150) (4) 34 (120) Balance at December 31, 2018 (4,673 ) (5 ) (1,218 ) (5,896 ) Other comprehensive income (loss) before reclassifications (476) 3 107 (366) Amounts reclassified from AOCI (89 ) — 20 $^{(2)}$  (69 ) Net current-period other comprehensive income (loss) (565) 3 127 (435) Balance at December 31, 2019 $ (5,238 ) $ (2 ) $ (1,091 ) $ (6,331 ) Amounts reclassified from AOCI Affected line items on the consolidated statements of operations Year Ended December 31, AOCI Components 2019 2018 Amortization of pension, retiree medical and other postretirement benefits: Prior service benefit $ (162) $ (161) Nonoperating other income, net Actuarial loss 93 92  Nonoperating other income, net Total reclassifications for the period, net of tax $ (69) $ (69) $^{(1)}$  Relates principally to pension, retiree medical and other postretirement benefits obligations that will not be recognized in net income until the obligations are fully extinguished. $^{(2)}$  Relates to pension, retiree medical and other postretirement benefits obligations and is recognized within the income tax provision on our consolidated statements of operations. $^{(1)}$  These amounts are net of purchase deposits currently held by the manufacturers. We have granted a security interest in certain of our purchase deposits with Boeing. Our purchase deposits held by all manufacturers totaled $1.7 billion as of December 31, 2019. 107