XML 168 R99.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Property, Plant, and Equipment, Net - Summary of Property, Plant, and Equipment, Net (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property Plant And Equipment [Line Items]      
Property, plant and equipment, gross $ 9,413 $ 8,992  
Less: Accumulated depreciation (5,854) (5,701)  
Property, plant, and equipment, net 3,559 3,291 $ 3,008
Equipment [Member]      
Property Plant And Equipment [Line Items]      
Property, plant and equipment, gross 7,595 7,344  
Building [Member]      
Property Plant And Equipment [Line Items]      
Property, plant and equipment, gross 1,174 914  
Construction-in-progress [Member]      
Property Plant And Equipment [Line Items]      
Property, plant and equipment, gross 493 579  
Land [Member]      
Property Plant And Equipment [Line Items]      
Property, plant and equipment, gross 115 119  
Mineral rights [Member]      
Property Plant And Equipment [Line Items]      
Property, plant and equipment, gross $ 36 $ 36