ÐÇ¿Õ´«Ã½

Annual report pursuant to Section 13 and 15(d)

PROPERTY, PLANT AND EQUIPMENT (Book Value of Land and Mineral Rights Disclosure) (Details)

v3.20.4
PROPERTY, PLANT AND EQUIPMENT (Book Value of Land and Mineral Rights Disclosure) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Mineral rights: Ìý Ìý
Mineral Properties, Gross $ 773 $ 537
Mineral Properties, Accumulated Depletion (142) (134)
Mineral Properties, Net 631 403
Land Rights $ 361 $ 12