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Consolidated Statements of Changes in Equity - Evergy Kansas Central, Inc - USD ($) $ in Millions | Total | Common Stock | Retained earnings | Non-controlling interests | Evergy Kansas Central | Evergy Kansas Central Common Stock | Evergy Kansas Central Retained earnings | Evergy Kansas Central Non-controlling interests
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2017 |  | 142,094,275 |  |  |  | 142,094,275 |  |
Beginning balance at Dec. 31, 2017 | $ 3,860.4 | $ 2,734.8 | $ 1,173.3 | $ (47.7) | $ 3,860.4 | $ 2,734.8 | $ 1,173.3 | $ (47.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income | 546.0 |  | 535.8 | 10.2 | 349.1 |  | 338.9 | 10.2
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares) |  | 533,273 |  |  |  | 516,990 |  |
Issuance of stock compensation and reinvested dividends, net of tax withholding | (16.7) | $ (16.7) |  |  | (17.2) | $ (17.2) |  |
Stock Canceled During Period Shares Net |  |  |  |  |  | (142,611,264) |  |
Stock Canceled During Period, Value |  |  |  |  | 0.0 |  |  |
Dividends declared on common stock | (362.1) |  | (362.1) |  | (251.6) |  | (251.6) |
Stock compensation expense | 29.9 | 29.9 |  |  | 19.9 | $ 19.9 |  |
Stockholders' Equity, Other | (0.4) | $ (0.4) |  |  | 0.1 | $ 0.1 |  |
Ending balance (in shares) at Dec. 31, 2018 |  | 255,326,252 |  |  |  | 1 |  |
Ending balance at Dec. 31, 2018 | 9,990.7 | $ 8,685.2 | 1,346.0 | (37.5) | 3,960.7 | $ 2,737.6 | 1,260.6 | (37.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income | 685.6 |  | 669.9 | 15.7 | 359.1 |  | 343.4 | 15.7
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares) |  | 111,849 |  |  |  |  |  |
Issuance of stock compensation and reinvested dividends, net of tax withholding | (2.4) | $ (2.4) |  |  |  |  |  |
Dividends declared on common stock | (462.5) |  | (462.5) |  | (110.0) |  | (110.0) |
Stock compensation expense | 16.3 | $ 16.3 |  |  |  |  |  |
Consolidation of noncontrolling interests | 3.8 |  |  | 3.8 | 3.8 |  |  | 3.8
Distributions to shareholders of noncontrolling interests | (8.6) |  |  | (8.6) | (8.6) |  |  | (8.6)
Ending balance (in shares) at Dec. 31, 2019 |  | 226,641,443 |  |  |  | 1 |  |
Ending balance at Dec. 31, 2019 | 8,545.3 | $ 7,070.4 | 1,551.5 | (26.6) | 4,205.0 | $ 2,737.6 | 1,494.0 | (26.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income | 630.0 |  | 618.3 | 11.7 | 235.8 |  | 224.1 | 11.7
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares) |  | 195,227 |  |  |  |  |  |
Issuance of stock compensation and reinvested dividends, net of tax withholding | (5.9) | $ (5.9) |  |  |  |  |  |
Dividends declared on common stock | (465.0) |  | (465.0) |  | (160.0) |  | (160.0) |
Stock compensation expense | 16.0 | 16.0 |  |  |  |  |  |
Stockholders' Equity, Other | (0.5) | $ (0.5) |  |  |  |  |  |
Ending balance (in shares) at Dec. 31, 2020 |  | 226,836,670 |  |  |  | 1 |  |
Ending balance at Dec. 31, 2020 | $ 8,718.5 | $ 7,080.0 | $ 1,702.8 | $ (14.9) | $ 4,280.8 | $ 2,737.6 | $ 1,558.1 | $ (14.9)

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