The following table details the activity of the four components that comprise Accumulated other comprehensive loss for both Arconic’s shareholders and noncontrolling interests:



	Arconic									Noncontrolling Interests
	2018			2017			2016			2018		2017			2016
Pension and other postretirement benefits (G)
Balance at beginning of period	$	(2,230	)	$	(2,010	)	$	(3,611	)	$	—	$	—		$	(56	)
Adoption of accounting standard (A)	(369		)	—			—			—		—			—
Other comprehensive income (loss):
Unrecognized net actuarial loss and prior service cost/benefit	70			(466		)	(1,112		)	—		—			(9		)
Tax (expense) benefit	(19		)	102			380			—		—			3
Total Other comprehensive income (loss) before reclassifications, net of tax	51			(364		)	(732		)	—		—			(6		)
Amortization of net actuarial loss and prior service cost⁽¹⁾	262			222			389			—		—			4
Tax expense⁽²⁾	(58		)	(78		)	(136		)	—		—			(1		)
Total amount reclassified from Accumulated other comprehensive loss, net of tax⁽⁸⁾	204			144			253			—		—			3
Total Other comprehensive income (loss)	255			(220		)	(479		)	—		—			(3		)
Transfer to Alcoa Corporation	—			—			2,080			—		—			59
Balance at end of period	$	(2,344	)	$	(2,230	)	$	(2,010	)	$	—	$	—		$	—
Foreign currency translation
Balance at beginning of period	$	(437	)	$	(689	)	$	(2,412	)	$	—	$	(2	)	$	(780	)
Other comprehensive (loss) income⁽³⁾	(146		)	252			268			—		2			182
Transfer to Alcoa Corporation	—			—			1,455			—		—			596
Balance at end of period	$	(583	)	$	(437	)	$	(689	)	$	—	$	—		$	(2	)
Available-for-sale securities
Balance at beginning of period	$	(2	)	$	132		$	(5	)	$	—	$	—		$	—
Other comprehensive (loss) income⁽⁴⁾	(1		)	(134		)	137			—		—			—
Balance at end of period	$	(3	)	$	(2	)	$	132		$	—	$	—		$	—
Cash flow hedges
Balance at beginning of period	$	25		$	(1	)	$	597		—		$	—		$	(3	)
Adoption of accounting standard (A)	2			—			—			—		—			—
Other comprehensive (loss) income:
Net change from periodic revaluations	(15		)	37			(843		)	—		—			36
Tax benefit (expense)	3			(9		)	252			—		—			(10		)
Total Other comprehensive (loss) income before reclassifications, net of tax	(12		)	28			(591		)	—		—			26
Net amount reclassified to earnings
Aluminum contracts⁽⁵⁾	(8		)	(2		)	1			—		—			—
Energy contracts⁽⁶⁾	—			—			(49		)	—		—			(34		)
Interest rate contracts⁽⁷⁾	(2		)	—			9			—		—			5
Nickel contracts⁽⁶⁾	(4		)	(1		)	1			—		—			—
Sub-total	(14		)	(3		)	(38		)	—		—			(29		)
Tax benefit⁽²⁾	3			1			12			—		—			8
Total amount reclassified from Accumulated other comprehensive loss, net of tax⁽⁸⁾	(11		)	(2		)	(26		)	—		—			(21		)
Total Other comprehensive (loss) income	(23		)	26			(617		)	—		—			5
Transfer to Alcoa Corporation	—			—			19			—		—			(2		)
Balance at end of period	$	4		$	25		$	(1	)	$	—	$	—		$	—

Total balance at end of period	$	(2,926	)	$	(2,644	)	$	(2,568	)	$	—	$	—		$	(2	)


⁽¹⁾	These amounts were included in the computation of net periodic benefit cost for pension and other postretirement benefits (see Note G).


⁽²⁾	These amounts were included 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⁾	Realized gains and losses were included in Other expense (income), net, net on the accompanying Statement of Consolidated Operations.


⁽⁵⁾	These amounts were included in Sales on the accompanying Statement of Consolidated Operations.


⁽⁶⁾	These amounts were included in Cost of goods sold on the accompanying Statement of Consolidated Operations.


⁽⁷⁾	These amounts were included in Interest expense on the accompanying Statement of Consolidated Operations.


⁽⁸⁾	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 7