The accredited capacity of the jointly owned electric utility plant, in megawatts.

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- Definition

Leasehold Interest Percentage

+ References

No definition available.

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- Definition

The period end amount owned by the reporting utility of a jointly owned utility plant in service.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 360
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479960/980-360-S99-1

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- Definition

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.

+ References

No definition available.

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- Definition

The period end amount of construction work in progress at a jointly owned electricity generation plant.

+ References

+ Details

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- Definition

The period end amount of accumulated depreciation in a jointly owned electricity generation plant.

+ References

+ Details

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- Definition

The proportionate share of interest (percent) in a jointly owned utility plant.

+ References

+ Details

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- Definition

The carrying amount as of the balance sheet of nuclear fuel held as property plant and equipment. This amount is net of amortization based on the energy produced over the life of the fuel.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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JOINTLY-OWNED ELECTRIC UTILITY PLANTS (Details) $ in Millions	Dec. 31, 2023	Dec. 31, 2023 USD ($)	Dec. 31, 2023 Rate	Dec. 31, 2023 MW	Dec. 31, 2022 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net		$ 203.0			$ 165.8
Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share	94.00%		94.00%
Electric plant in service		4,328.9
Accumulated depreciation		2,221.1
Nuclear fuel, net		203.0
Construction work in progress		192.6
Accredited capacity \| MW				1,106
La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			100.00%
Electric plant in service		2,280.0
Accumulated depreciation		981.3
Nuclear fuel, net		0.0
Construction work in progress		33.6
Accredited capacity \| MW				1,426
Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			88.00%
Electric plant in service		793.6
Accumulated depreciation		279.3
Nuclear fuel, net		0.0
Construction work in progress		13.5
Accredited capacity \| MW				618
Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			73.00%
Electric plant in service		1,404.3
Accumulated depreciation		457.8
Nuclear fuel, net		0.0
Construction work in progress		10.1
Accredited capacity \| MW				653
Iatan Common
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			79.00%
Electric plant in service		517.5
Accumulated depreciation		134.6
Nuclear fuel, net		0.0
Construction work in progress		3.4
Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			100.00%
Electric plant in service		2,451.6
Accumulated depreciation		1,042.1
Nuclear fuel, net		0.0
Construction work in progress		186.8
Accredited capacity \| MW				2,186
State Line
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			40.00%
Electric plant in service		134.9
Accumulated depreciation		96.5
Nuclear fuel, net		0.0
Construction work in progress		7.7
Accredited capacity \| MW				209
Evergy Kansas Central
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net		101.1			82.2
Evergy Kansas Central \| Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share	47.00%		47.00%
Electric plant in service		2,125.2
Accumulated depreciation		1,082.6
Nuclear fuel, net		101.1
Construction work in progress		80.9
Accredited capacity \| MW				553
Evergy Kansas Central \| La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			50.00%
Electric plant in service		1,049.7
Accumulated depreciation		530.7
Nuclear fuel, net		0.0
Construction work in progress		17.0
Accredited capacity \| MW				713
Evergy Kansas Central \| Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			92.00%
Electric plant in service		2,243.1
Accumulated depreciation		958.2
Nuclear fuel, net		0.0
Construction work in progress		171.6
Accredited capacity \| MW				2,011
Evergy Kansas Central \| State Line
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			40.00%
Electric plant in service		134.9
Accumulated depreciation		96.5
Nuclear fuel, net		0.0
Construction work in progress		7.7
Accredited capacity \| MW				209
Evergy Metro
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net		101.9			$ 83.6
Evergy Metro \| Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share	47.00%		47.00%
Electric plant in service		2,203.7
Accumulated depreciation		1,138.5
Nuclear fuel, net		101.9
Construction work in progress		111.7
Accredited capacity \| MW				553
Evergy Metro \| La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			50.00%
Electric plant in service		1,230.3
Accumulated depreciation		450.6
Nuclear fuel, net		0.0
Construction work in progress		16.6
Accredited capacity \| MW				713
Evergy Metro \| Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			70.00%
Electric plant in service		617.2
Accumulated depreciation		237.3
Nuclear fuel, net		0.0
Construction work in progress		10.8
Accredited capacity \| MW				492
Evergy Metro \| Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			55.00%
Electric plant in service		1,059.7
Accumulated depreciation		430.1
Nuclear fuel, net		0.0
Construction work in progress		7.6
Accredited capacity \| MW				491
Evergy Metro \| Iatan Common
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate			61.00%
Electric plant in service		410.4
Accumulated depreciation		123.1
Nuclear fuel, net		0.0
Construction work in progress		$ 2.4
Subsidiaries \| La Cygne Unit 2
Jointly Owned Utility Plant Interests [Line Items]
Leasehold interest percentage	50.00%
Subsidiaries \| Evergy Kansas Central \| La Cygne Unit 2
Jointly Owned Utility Plant Interests [Line Items]
Leasehold interest percentage	50.00%