Debt Instrument, Covenant, Debt to Capitalization Ratio

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- Definition

Partial Settlement Of Accelerated Share Repurchase Agreement, Shares

+ References

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- Definition

Restriction on Payment of Dividends, Minimum Ratio of Equity to Capitalization

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No definition available.

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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period under the repurchase plan. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

No definition available.

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- Definition

Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653

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- Definition

Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e)(3)(ii))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Disclosure of the amount of equity that is restricted to use by regulation or agreement.

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No definition available.

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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.

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased and retired during the period.

+ 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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SHAREHOLDERS' EQUITY (Details) - USD ($)	3 Months Ended	9 Months Ended
SHAREHOLDERS' EQUITY (Details) - USD ($)	Mar. 31, 2019	Mar. 31, 2019	Feb. 28, 2019	Dec. 31, 2018	Nov. 30, 2018	Jul. 31, 2018
Line of Credit Facility [Line Items]
Number of shares authorized to be repurchased (in shares)						60,000,000
Stock repurchased and retired during period under repurchase plan, value	$ 578,300,000	$ 1,600,000,000
Stock repurchased and retired during period (in shares)	10,500,000	26,900,000
Stock repurchase program, authorized amount (in shares)	$ 450,000,000	$ 450,000,000			$ 475,000,000.0
Partial settlement of accelerated share repurchase agreement (in shares)	6,300,000	6,300,000	1,900,000	6,400,000
Accelerated share repurchases, payment	$ 450,000,000	$ 450,000,000		$ 475,000,000
Restriction on payment of dividends, minimum ratio of total capitalization	35.00%	35.00%
Restricted net assets of subsidiaries	$ 5,400,000,000	$ 5,400,000,000
Cash Borrowings
Line of Credit Facility [Line Items]
Debt Instrument, debt to capitalization ratio (no more than)	65.00%	65.00%
Westar Energy
Line of Credit Facility [Line Items]
Restriction on payment of dividends, minimum ratio of total capitalization	40.00%	40.00%
Westar Energy \| Cash Borrowings
Line of Credit Facility [Line Items]
Debt Instrument, debt to capitalization ratio (no more than)	65.00%	65.00%
KCP&L
Line of Credit Facility [Line Items]
Restriction on payment of dividends, minimum ratio of total capitalization	40.00%	40.00%
Retained earnings restrictions	$ 471,200,000	$ 471,200,000
KCP&L \| Cash Borrowings
Line of Credit Facility [Line Items]
Debt Instrument, debt to capitalization ratio (no more than)	65.00%	65.00%
GMO \| Cash Borrowings
Line of Credit Facility [Line Items]
Debt Instrument, debt to capitalization ratio (no more than)	65.00%	65.00%