in this case, is OCI a gain or loss? it says OCI (loss) but the actual dollar amount is not in parentheses.. i am having trouble understanding how to read the annual report

also in this case, Accumulated Other Comprehensive income (AOCI) is in brackets. is AOCI a gain or loss? if so, why is it a gain or loss? ( un recog gain / loss) ?

is it possible for OCI to be positive and AOCI to be negative?

i am unsure if these amounts are due to gains and losses and whether they are gains or losses

(In millions) Net earnings including noncontrolling interests 2018 (52 weeks) (5 $ 3,078 $ Other comprehensive income (loss) Realized gains and losses on available for sale securities, net of income tax Change in pension and other postretirement defined benefit plans, net of income tax 147 (23) Unrealized gains and losses on cash flow hedging activities, net of income tax Amortization of unrealized gains and losses on cash flow hedging activities, net of income tax 5 Total other comprehensive income (loss) 125 Comprehensive income 3,203 Additional paid-in capital Accumulated other comprehensive loss Accumulated earnings 3,245 (346) 19,681