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

No definition available.

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- Definition

Leasehold Interest Percentage

+ References

No definition available.

+ Details

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.C)
-URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033

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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

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- Definition

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

+ References

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- Definition

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

+ References

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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JOINTLY-OWNED ELECTRIC UTILITY PLANTS (Details) $ in Millions	Dec. 31, 2019 USD ($)	Dec. 31, 2019	Dec. 31, 2019 MW	Dec. 31, 2019 Rate	Dec. 31, 2018 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net	$ 128.5				$ 133.1
Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share		94.00%		94.00%	47.00%
Utility plant in service	3,827.8
Accumulated depreciation	1,835.3
Nuclear fuel, net	128.6
Construction work in progress	141.4
Accredited capacity \| MW			1,104
La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				100.00%
Utility plant in service	2,202.4
Accumulated depreciation	751.6
Nuclear fuel, net	0.0
Construction work in progress	21.0
Accredited capacity \| MW			1,398
Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				88.00%
Utility plant in service	718.9
Accumulated depreciation	269.2
Nuclear fuel, net	0.0
Construction work in progress	54.4
Accredited capacity \| MW			616
Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				73.00%
Utility plant in service	1,379.7
Accumulated depreciation	447.2
Nuclear fuel, net	0.0
Construction work in progress	23.5
Accredited capacity \| MW			650
Iatan Common
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				79.00%
Utility plant in service	484.3
Accumulated depreciation	116.4
Nuclear fuel, net	0.0
Construction work in progress	9.4
Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				100.00%
Utility plant in service	2,428.6
Accumulated depreciation	918.1
Nuclear fuel, net	0.0
Construction work in progress	38.9
Accredited capacity \| MW			2,186
State Line
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				40.00%
Utility plant in service	114.6
Accumulated depreciation	75.9
Nuclear fuel, net	0.0
Construction work in progress	2.8
Accredited capacity \| MW			196
Evergy Kansas Central
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net	63.9				$ 66.1
Evergy Kansas Central \| Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share				47.00%	47.00%
Utility plant in service	1,884.5
Accumulated depreciation	862.2
Nuclear fuel, net	63.9
Construction work in progress	67.3
Accredited capacity \| MW			552
Evergy Kansas Central \| La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				50.00%
Utility plant in service	1,048.0
Accumulated depreciation	426.5
Nuclear fuel, net	0.0
Construction work in progress	14.6
Accredited capacity \| MW			699
Evergy Kansas Central \| Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				92.00%
Utility plant in service	2,223.4
Accumulated depreciation	832.5
Nuclear fuel, net	0.0
Construction work in progress	34.9
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%
Utility plant in service	114.6
Accumulated depreciation	75.9
Nuclear fuel, net	0.0
Construction work in progress	2.8
Accredited capacity \| MW			196
Evergy Metro
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net	64.6				$ 67.0
Evergy Metro \| Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share		47.00%		47.00%
Utility plant in service	1,943.3
Accumulated depreciation	973.1
Nuclear fuel, net	64.7
Construction work in progress	74.1
Accredited capacity \| MW			552
Evergy Metro \| La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				50.00%
Utility plant in service	1,154.4
Accumulated depreciation	325.1
Nuclear fuel, net	0.0
Construction work in progress	6.4
Accredited capacity \| MW			699
Evergy Metro \| Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				70.00%
Utility plant in service	575.1
Accumulated depreciation	214.9
Nuclear fuel, net	0.0
Construction work in progress	25.9
Accredited capacity \| MW			490
Evergy Metro \| Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				55.00%
Utility plant in service	1,060.7
Accumulated depreciation	393.0
Nuclear fuel, net	0.0
Construction work in progress	3.5
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%
Utility plant in service	390.1
Accumulated depreciation	99.8
Nuclear fuel, net	0.0
Construction work in progress	$ 1.3
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%