Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

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
First quarter ended March 31,	2018			2017			2018		2017
Pension and other postretirement benefits (G)
Balance at beginning of period	$	(2,230	)	$	(2,010	)	$	—	$	—
Other comprehensive income:
Unrecognized net actuarial loss and prior service cost/benefit	137			(6		)	—		—
Tax (expense) benefit	(31		)	1			—		—
Total Other comprehensive income (loss) before reclassifications, net of tax	106			(5		)	—		—
Amortization of net actuarial loss and prior service cost(1)	48			55			—		—
Tax expense(2)	(11		)	(19		)	—		—
Total amount reclassified from Accumulated other comprehensive loss, net of tax(5)	37			36			—		—
Total Other comprehensive income	143			31			—		—
Balance at end of period	$	(2,087	)	$	(1,979	)	$	—	$	—
Foreign currency translation
Balance at beginning of period	$	(437	)	$	(689	)	$	—	$	(2	)
Other comprehensive income(3)	122			67			—		—
Balance at end of period	$	(315	)	$	(622	)	$	—	$	(2	)
Available-for-sale securities
Balance at beginning of period	$	(2	)	$	132		$	—	$	—
Other comprehensive loss (4)	—			(33		)	—		—
Balance at end of period	$	(2	)	$	99		$	—	$	—
Cash flow hedges
Balance at beginning of period	$	25		$	(1	)	$	—	$	—
Other comprehensive (loss) income:
Net change from periodic revaluations	(6		)	8			—		—
Tax benefit (expense)	1			(3		)	—		—
Total Other comprehensive (loss) income before reclassifications, net of tax	(5		)	5			—		—
Net amount reclassified to earnings	(3		)	—			—		—
Tax benefit (2)	1			—			—		—
Total amount reclassified from Accumulated other comprehensive loss, net of tax (5)	(2		)	—			—		—
Total Other comprehensive (loss) income	(7		)	5			—		—
Balance at end of period	$	18		$	4		$	—	$	—

⁽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 on the accompanying Statement of Consolidated Operations.

⁽⁵⁾  A positive amount indicates a corresponding charge to earnings and a negative amount indicates a corresponding benefit to earnings.