Note 8 - Property, Plant and Equipment, Net of Accumulated Depreciation (Details Textual) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Precious Metals	$ 3,400	$ 3,500
Depletion, Total	27	28	$ 24
Interest Costs Capitalized	$ 48	$ 36	$ 58

The noncash expense charged against earnings to recognize the consumption of natural resources.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Name:	us-gaap_Depletion
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration