Description of Plan - Employer Contributions (Details) - EBP 002	12 Months Ended
Dec. 31, 2025
Non-represented management employees
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
PGL Local 18007 \| Hired prior to May 1, 2008
Description of Plan
Employer contribution, matching percentage	60.00%
Employer contribution, matching percentage of eligible compensation	6.00%
PGL Local 18007 \| Hired on or after May 1, 2008
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
PGL Local 18007C \| Hired on or after September 11, 2016
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
NSG Local 2285 \| Hired prior to July 1, 2008
Description of Plan
Employer contribution, matching percentage	60.00%
Employer contribution, matching percentage of eligible compensation	6.00%
NSG Local 2285 \| Hired on or after July 1, 2008
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
WPSC Local 420 \| Gross Pay
Description of Plan
Participant Contribution, Automatic, Deferral Rate	2.00%
WPSC Local 420 \| Base Pay
Description of Plan
Participant Contribution, Automatic, Deferral Rate	2.70%
WPSC Local 420 \| Hired prior to December 19, 2009
Description of Plan
Employer contribution, matching percentage	0.00%
WPSC Local 420 \| Hired on or after December 19, 2009
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
MGU Local 12295 \| Hired prior to January 16, 2010
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	6.00%
MGU Local 12295 \| Hired on or after January 16, 2010
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
WRPCO Local 1147 \| Hired prior to April 18, 2010
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	4.00%
WRPCO Local 1147 \| Hired on or after April 18, 2010
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
MERC Local 31 \| Hired prior to March 22, 2011
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	6.00%
MERC Local 31 \| Hired on or after March 22, 2011
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
MERC Local 49
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%
MGU Local 417 \| Hired prior to February 16, 2012
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	6.00%
MGU Local 417 \| Hired on or after February 16, 2012
Description of Plan
Employer contribution, matching percentage	100.00%
Employer contribution, matching percentage of eligible compensation	5.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

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- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

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- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

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Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

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