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Properties, Plants, and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Schedule of Properties, Plants, and Equipment, Net Properties, Plants, and Equipment, Net
December 31,
2019
 
2018
Land and land rights
$
128

 
$
136

Structures:
 
 
 
Engineered Products and Forgings
812

 
769

Global Rolled Products
1,304

 
1,317

Other
269

 
278

 
2,385

 
2,364

Machinery and equipment:
 
 
 
Engineered Products and Forgings
3,514

 
3,433

Global Rolled Products
5,401

 
5,356

Other
378

 
445

 
9,293

 
9,234

 
11,806

 
11,734

Less: accumulated depreciation and amortization
7,074

 
6,769

 
4,732

 
4,965

Construction work-in-progress
731

 
739

 
$
5,463

 
$
5,704