Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Carrying Values and Fair Values of Financial Instruments

The carrying values and fair values of Arconic’s financial instruments were as follows:

	March 31, 2018				December 31, 2017
	Carrying value		Fair value		Carrying value		Fair value
Cash and cash equivalents	$	1,205	$	1,205	$	2,150	$	2,150
Restricted cash	3		3		4		4
Derivatives – current asset	37		37		61		61
Noncurrent receivables	20		20		20		20
Derivatives – noncurrent asset	19		19		33		33
Available-for-sale securities	96		96		106		106
Short-term debt	45		45		38		38
Derivatives – current liability	29		29		45		45
Derivatives – noncurrent liability	8		8		14		14
Long-term debt, less amount due within one year	6,309		6,631		6,806		7,443