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ORGANIZATION AND BASIS OF PRESENTATION - New Accounting Pronouncements (Details) - ASU 2016-02 $ in Millions | Jan. 01, 2019 USD ($)
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Entity Information [Line Items] |
Lease asset | $ 110
Lease liability | 110
Westar Energy |
Entity Information [Line Items] |
Lease asset | 40
Lease liability | 40
KCP&L |
Entity Information [Line Items] |
Lease asset | 80
Lease liability | $ 80

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Balance Type: | credit
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- Details
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- Details
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- Details
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