The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

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

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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- Definition

Amount of transactions with related party during the financial reporting period.

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Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date within one year where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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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.

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No definition available.

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RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Evergy Metro \| Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Parties, Current	$ 78.0		$ 78.0
Due to Related Parties, Current	0.0		0.0
Due from (to) related parties					$ 0.0
Evergy Metro \| Evergy Missouri West Inc
Related Party Transaction [Line Items]
Due from (to) related parties	16.1		16.1		(4.3)
Evergy Metro \| Evergy Missouri West Inc \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	46.5	$ 41.6	121.8	$ 125.8
Evergy Metro \| Evergy Kansas Central
Related Party Transaction [Line Items]
Due from (to) related parties	15.4		15.4		14.9
Evergy Metro \| Evergy Kansas Central \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	26.9	33.0	94.5	108.8
Evergy Metro \| Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	160.0		160.0		78.7
Evergy Metro \| Evergy \| Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties	0.6		0.6
Evergy Metro \| Evergy \| Income Taxes Payable
Related Party Transaction [Line Items]
Due from (to) related parties					(14.1)
Evergy Kansas Central \| Evergy Missouri West Inc
Related Party Transaction [Line Items]
Due from (to) related parties	(0.2)		(0.2)		6.9
Evergy Kansas Central \| Evergy Missouri West Inc \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	13.1	4.5	27.4	17.2
Evergy Kansas Central \| Evergy Metro
Related Party Transaction [Line Items]
Due from (to) related parties	(15.4)		(15.4)		(14.9)
Evergy Kansas Central \| Evergy Metro \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	5.4	$ 9.7	24.9	$ 26.0
Evergy Kansas Central \| Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	4.5		4.5		3.1
Evergy Kansas Central \| Evergy \| Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties	29.3		29.3		37.9
Evergy Kansas Central \| Evergy Metro \| Subsidiary of Common Parent
Related Party Transaction [Line Items]
Right-of-use assets under operating leases	29.1		29.1		29.5
Lease liability recorded in other current liabilities	0.7		0.7		0.6
Total long-term obligations under operating leases	$ 28.4		$ 28.4		$ 28.9
Jointly Owned Electricity Generation Plant Iatan No 1 And 2 \| Evergy Missouri West Inc
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	18.00%		18.00%
Jeffrey Energy Center \| Evergy Missouri West Inc
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	8.00%		8.00%
La Cygne Station \| Evergy Kansas Central
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	50.00%		50.00%