Properties, Plants, and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of Properties, Plants, and Equipment, Net

December 31,	2017		2016
Land and land rights	$	140	$	135
Structures:
Engineered Products and Solutions	784		733
Global Rolled Products	1,090		1,061
Transportation and Construction Solutions	268		254
Other	253		248
	2,395		2,296
Machinery and equipment:
Engineered Products and Solutions	3,054		2,728
Global Rolled Products	4,641		4,570
Transportation and Construction Solutions	777		723
Other	358		337
	8,830		8,358
	11,365		10,789
Less: accumulated depreciation and amortization	6,392		6,073
	4,973		4,716
Construction work-in-progress	621		783
	$	5,594	$	5,499