Power Purchase Agreements (Schedule Of Power Purchase Obligations) (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Regulated Operations [Abstract]
2023	$ 186.9
2024	29.0
2025	1.6
Power Purchase Obligations	$ 217.5

Capacity and energy commitments in next twelve months.

No definition available.

Name:	ck0000885568_CapacityAndEnergyCommitmentsInNextTwelveMonths
Namespace Prefix:	ck0000885568_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration