XML 109 R83.htm IDEA: XBRL DOCUMENT
v3.22.1

Regulatory and Rate Matters - Formula Transmission Rates (Details) | 3 Months Ended
--- | ---
Mar. 31, 2022
Regulated Operations [Abstract] |
Return on equity | 10.00%

X
- Definition Percentage of public utility's approved return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RegulatedOperationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration