The following table details the activity of the three components that comprise Accumulated other comprehensive loss for both Alcoa Corporation’s shareholders and noncontrolling interest:

	Alcoa Corporation									Noncontrolling interest
	2018			2017			2016			2018			2017			2016
Pension and other postretirement benefits (N)
Balance at beginning of period	$	(2,786	)	$	(2,330	)	$	(352	)	$	(47	)	$	(56	)	$	(56	)
Establishment of additional defined benefit plans		—			—			(2,704	)		—			—			—
Separation-related adjustments (A)		—			—			928			—			—			—
Other comprehensive income (loss):
Unrecognized net actuarial loss and prior service cost/benefit		19			(671	)		(307	)		(3	)		9			2
Tax (expense) benefit		(8	)		25			6			—			(2	)		(6	)
Total Other comprehensive income (loss) before reclassifications, net of tax		11			(646	)		(301	)		(3	)		7			(4	)
Amortization of net actuarial loss and prior service cost/benefit⁽¹⁾		546			199			107			4			2			5
Tax expense⁽²⁾		(54	)		(9	)		(8	)		—			—			(1	)
Total amount reclassified from Accumulated other comprehensive loss, net of tax⁽⁷⁾		492			190			99			4			2			4
Total Other comprehensive income (loss)		503			(456	)		(202	)		1			9			—
Balance at end of period	$	(2,283	)	$	(2,786	)	$	(2,330	)	$	(46	)	$	(47	)	$	(56	)
Foreign currency translation
Balance at beginning of period	$	(1,467	)	$	(1,655	)	$	(1,851	)	$	(581	)	$	(677	)	$	(779	)
Separation-related adjustments (A)		—			—			(17	)		—			—			—
Other comprehensive (loss) income⁽³⁾		(604	)		188			213			(229	)		96			102
Balance at end of period	$	(2,071	)	$	(1,467	)	$	(1,655	)	$	(810	)	$	(581	)	$	(677	)
Cash flow hedges (O)
Balance at beginning of period	$	(929	)	$	210		$	603		$	51		$	1		$	(3	)
Separation-related adjustments (A)		—			—			(47	)		—			—			—
Other comprehensive income (loss):
Net change from periodic revaluations		803			(1,489	)		(558	)		(4	)		83			38
Tax (expense) benefit		(159	)		251			233			1			(25	)		(12	)
Total Other comprehensive income (loss) before reclassifications, net of tax		644			(1,238	)		(325	)		(3	)		58			26
Net amount reclassified to earnings:
Aluminum contracts⁽⁴⁾		108			130			7			—			—			—
Financial contracts⁽⁵⁾		(37	)		(19	)		(54	)		(24	)		(12	)		(37	)
Foreign exchange contracts⁽⁴⁾		6			(2	)		—			—			—			—
Interest rate contract⁽⁶⁾		—			—			7			—			—			5
Sub-total		77			109			(40	)		(24	)		(12	)		(32	)
Tax (expense) benefit⁽²⁾		(3	)		(10	)		19			7			4			10
Total amount reclassified from Accumulated other comprehensive loss, net of tax⁽⁷⁾		74			99			(21	)		(17	)		(8	)		(22	)
Total Other comprehensive income (loss)		718			(1,139	)		(346	)		(20	)		50			4
Balance at end of period	$	(211	)	$	(929	)	$	210		$	31		$	51		$	1

⁽¹⁾

These amounts were included in the computation of net periodic benefit cost for pension and other postretirement benefits (see Note N). For 2018, the amounts for Alcoa Corporation include $330, (net) and for Noncontrolling interest include $1 related to settlements and/or curtailments of certain pension and other postretirement employee benefits (see Note N).

⁽²⁾	These amounts were reported in Provision for income taxes on the accompanying Statement of Consolidated Operations.

⁽³⁾	In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.

⁽⁴⁾	These amounts were reported in Sales on the accompanying Statement of Consolidated Operations.

⁽⁵⁾	The 2018 and 2017 amounts were reported in Cost of goods sold and the 2016 amounts were reported in Other expenses (income), net on the accompanying Statement of Consolidated Operations.

⁽⁶⁾	These amounts were included in Other expenses (income), net on the accompanying Statement of Consolidated Operations.

⁽⁷⁾	A positive amount indicates a corresponding charge to earnings and a negative amount indicates a corresponding benefit to earnings. These amounts were reflected on the accompanying Statement of Consolidated Operations in the line items indicated in footnotes 1 through 6.