Note 1 - Basis of Presentation - Proceeds Received for Project (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Proceeds from asset sold	$ (0)	$ 14	$ 7	$ 22
Sale Agreement with the Doraville Community Improvement District [Member]
Proceeds from asset sold	0	0	0	0
Proceeds received in advance of asset sale	0	0	0	9
Total proceeds received for asset transfer to CID	0	0	0	9
Proceeds for reimbursement of development costs	1	12	6	29
Total proceeds received from CID	$ 1	$ 12	$ 6	$ 38

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration