Vogtle Units No. 3 and No. 4 Construction Project - Project Budget and Actual Costs (Details) - Vogtle Units No. 3 & No. 4 $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Actual Costs
Proceeds from guarantee agreement	$ 1,100
Cost sharing benefits	99
Jointly Owned Nuclear Power Plant
Project Budget (Tender)
Construction Costs	6,025
Financing Costs	1,974
Subtotal	7,999
Deferred Training Costs	49
Total Project Costs Before Contingency	8,048
Oglethorpe-Level Contingency	52
Total Contingency	52
Totals	8,100
Actual Costs
Construction Costs	6,000
Financing Costs	1,695
Subtotal	7,695
Deferred Training Costs	46
Total Project Costs Before Contingency	7,741
Oglethorpe-Level Contingency	0
Total Contingency	0
Totals	$ 7,741