Amounts recognized in AOCI not yet recognized as components of net periodic pension and OPEB cost, pretax, were as follows: Accumulated Other Comprehensive Income (Loss) As of December 31, 2018 As of December 31, 2017 Pension OPEB Consolidated Pension OPEB Consolidated (In millions) Net actuarial loss (gain) $ 687.8 $ (191.7 ) $ 496.1 $ 645.4 $ (83.3 ) $ 562.1 Net prior service cost 10.2 (5.6) 4.6 1.5 (1.6) (0.1) Total not yet recognized $ 698.0 $ (197.3 ) $ 500.7 $ 646.9 $ (84.9 ) $ 562.0 Pension OPEB Consolidated (In millions) Accumulated other comprehensive loss (income) as of December 31, 2016 $ 800.7 $ (47.8 ) $ 752.9 Amortization of prior service (costs) benefit (0.5) — (0.5) Amortization of net actuarial (loss) gain (12.2 ) — (12.2 ) Net prior service cost — (1.6) (1.6) Settlement 5.4 2.9 8.3 Current year actuarial loss (gain) (141.5) (38.7) (180.2) Foreign currency exchange rate change (5.0 ) 0.3 (4.7 ) Accumulated other comprehensive loss (income) as of December 31, 2017 $ 646.9 $ (84.9) $ 562.0 Amortization of prior service (costs) benefit (0.7 ) 0.2 (0.5 ) Amortization of net actuarial (loss) gain (7.6) 1.7 (5.9) Net prior service cost 9.8 (4.1 ) 5.7 Settlement — (0.1) (0.1) Current year actuarial loss (gain) 46.8 (107.9 ) (61.1 ) Foreign currency exchange rate change 2.8 (2.2) 0.6 Accumulated other comprehensive loss (income) as of December 31, 2018 $ 698.0 $ (197.3 ) $ 500.7 Changes in plan assets and benefit obligations recognized in OCI, pretax, were as follows: 139