FAIR VALUE MEASUREMENTS - Recurring (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023 |
Assets | | |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Fair Value, Measurements, Recurring | | |
Assets | | |
Total nuclear decommissioning trust | $ 827.7 | $ 766.4 |
Total rabbi trust | 32 | 33.3 |
Derivative Asset | 46.3 | 42.7 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (49.2) | (90.3) |
Total self-insured health plan trust | 16.9 | 15.7 |
Total Assets | 922.9 | 858.1 |
Derivative Liability | 43.3 | 45.4 |
FIN 39 Derivative liability netting | (42.1) | (83.4) |
Total Liabilities | 43.3 | 45.4 |
Fair Value, Measurements, Recurring | Level 1 | | |
Assets | | |
Total nuclear decommissioning trust | 709.7 | 653.7 |
Total rabbi trust | 32 | 33.3 |
Derivative Asset, Fair Value, Gross Asset | 41.1 | 89 |
Total self-insured health plan trust | 8.1 | 8.8 |
Total Assets | 790.9 | 784.8 |
Derivative Liability, Fair Value, Gross Liability | 35.8 | 82 |
Total Liabilities | 35.8 | 82 |
Fair Value, Measurements, Recurring | Level 2 | | |
Assets | | |
Total nuclear decommissioning trust | 49.1 | 47.8 |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 42.5 | 33.6 |
Total self-insured health plan trust | 8.8 | 6.9 |
Total Assets | 100.4 | 88.3 |
Derivative Liability, Fair Value, Gross Liability | 46.2 | 36.9 |
Total Liabilities | 46.2 | 36.9 |
Fair Value, Measurements, Recurring | Level 3 | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 11.9 | 10.4 |
Total self-insured health plan trust | 0 | 0 |
Total Assets | 11.9 | 10.4 |
Derivative Liability, Fair Value, Gross Liability | 3.4 | 9.9 |
Total Liabilities | 3.4 | 9.9 |
Fair Value, Measurements, Recurring | NAV | | |
Assets | | |
Total nuclear decommissioning trust | 68.9 | 64.9 |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total self-insured health plan trust | 0 | 0 |
Total Assets | 68.9 | 64.9 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Fair Value, Measurements, Recurring | Power commodity contract | | |
Assets | | |
Derivative Asset | 45.5 | 42 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (18.7) | (16.9) |
Derivative Liability | 39.9 | 43.9 |
FIN 39 Derivative liability netting | (11.6) | (10) |
Fair Value, Measurements, Recurring | Power commodity contract | Level 1 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 15.9 | 16.3 |
Derivative Liability, Fair Value, Gross Liability | 8.1 | 9.4 |
Fair Value, Measurements, Recurring | Power commodity contract | Level 2 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 36.4 | 32.2 |
Derivative Liability, Fair Value, Gross Liability | 40 | 34.6 |
Fair Value, Measurements, Recurring | Power commodity contract | Level 3 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 11.9 | 10.4 |
Derivative Liability, Fair Value, Gross Liability | 3.4 | 9.9 |
Fair Value, Measurements, Recurring | Power commodity contract | NAV | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Fair Value, Measurements, Recurring | Natural gas commodity contract | | |
Assets | | |
Derivative Asset | 0.8 | 0.7 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (30.5) | (73.4) |
Derivative Liability | 3.4 | 1.5 |
FIN 39 Derivative liability netting | (30.5) | (73.4) |
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 25.2 | 72.7 |
Derivative Liability, Fair Value, Gross Liability | 27.7 | 72.6 |
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 6.1 | 1.4 |
Derivative Liability, Fair Value, Gross Liability | 6.2 | 2.3 |
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 3 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Fair Value, Measurements, Recurring | Natural gas commodity contract | NAV | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | $ 0 | $ 0 |
Evergy Kansas Central | | |
Assets | | |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Evergy Kansas Central | Fair Value, Measurements, Recurring | | |
Assets | | |
Total nuclear decommissioning trust | $ 387.6 | $ 365.1 |
Total rabbi trust | 23.5 | 24.5 |
Derivative Asset | 37.8 | 40.9 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (47.4) | (87.2) |
Total Assets | 448.9 | 430.5 |
Derivative Liability | 43.3 | 40.7 |
FIN 39 Derivative liability netting | (40.3) | (80.3) |
Total Liabilities | 43.3 | 40.7 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Core bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 57.8 | 56.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | High-yield bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 30.4 | 29.1 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Emerging markets bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 18.5 | 18.3 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Combination debt/equity/other fund | | |
Assets | | |
Total rabbi trust | 1.7 | 1.7 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Alternative investments fund | | |
Assets | | |
Total nuclear decommissioning trust | 42.9 | 37.9 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Real estate securities fund | | |
Assets | | |
Total nuclear decommissioning trust | 16.3 | 17.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0.5 | 0.7 |
Total rabbi trust | 0.2 | 0.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Equity funds | | |
Assets | | |
Total rabbi trust | 7 | 7.4 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Fixed income funds | | |
Assets | | |
Total rabbi trust | 14.6 | 15.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | | |
Assets | | |
Total nuclear decommissioning trust | 318.7 | 300.2 |
Total rabbi trust | 23.5 | 24.5 |
Derivative Asset, Fair Value, Gross Asset | 41.1 | 89 |
Total Assets | 383.3 | 413.7 |
Derivative Liability, Fair Value, Gross Liability | 35.8 | 82 |
Total Liabilities | 35.8 | 82 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Core bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 57.8 | 56.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | High-yield bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 30.4 | 29.1 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Emerging markets bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 18.5 | 18.3 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Combination debt/equity/other fund | | |
Assets | | |
Total rabbi trust | 1.7 | 1.7 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Alternative investments fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Real estate securities fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0.5 | 0.7 |
Total rabbi trust | 0.2 | 0.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Equity funds | | |
Assets | | |
Total rabbi trust | 7 | 7.4 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Fixed income funds | | |
Assets | | |
Total rabbi trust | 14.6 | 15.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 42.5 | 33.6 |
Total Assets | 42.5 | 33.6 |
Derivative Liability, Fair Value, Gross Liability | 46.2 | 35.8 |
Total Liabilities | 46.2 | 35.8 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Core bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | High-yield bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Emerging markets bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Combination debt/equity/other fund | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Alternative investments fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Real estate securities fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Equity funds | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Fixed income funds | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 1.6 | 5.5 |
Total Assets | 1.6 | 5.5 |
Derivative Liability, Fair Value, Gross Liability | 1.6 | 3.2 |
Total Liabilities | 1.6 | 3.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Core bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | High-yield bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Emerging markets bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Combination debt/equity/other fund | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Alternative investments fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Real estate securities fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Equity funds | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Fixed income funds | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | | |
Assets | | |
Total nuclear decommissioning trust | 68.9 | 64.9 |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total Assets | 68.9 | 64.9 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Core bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | High-yield bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Emerging markets bond fund | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Combination debt/equity/other fund | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Alternative investments fund | | |
Assets | | |
Total nuclear decommissioning trust | 42.9 | 37.9 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Real estate securities fund | | |
Assets | | |
Total nuclear decommissioning trust | 16.3 | 17.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Equity funds | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Fixed income funds | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | | |
Assets | | |
Derivative Asset | 37 | 40.2 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (16.9) | (13.8) |
Derivative Liability | 39.9 | 40.3 |
FIN 39 Derivative liability netting | (9.8) | (6.9) |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 1 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 15.9 | 16.3 |
Derivative Liability, Fair Value, Gross Liability | 8.1 | 9.4 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 2 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 36.4 | 32.2 |
Derivative Liability, Fair Value, Gross Liability | 40 | 34.6 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 3 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 1.6 | 5.5 |
Derivative Liability, Fair Value, Gross Liability | 1.6 | 3.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | NAV | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | | |
Assets | | |
Derivative Asset | 0.8 | 0.7 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (30.5) | (73.4) |
Derivative Liability | 3.4 | 0.4 |
FIN 39 Derivative liability netting | (30.5) | (73.4) |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 25.2 | 72.7 |
Derivative Liability, Fair Value, Gross Liability | 27.7 | 72.6 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 6.1 | 1.4 |
Derivative Liability, Fair Value, Gross Liability | 6.2 | 1.2 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 3 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | NAV | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 143.8 | 133.1 |
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 1 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 134.1 | 123.3 |
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 2 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 3 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | NAV | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 9.7 | 9.8 |
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 77.4 | 72.6 |
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 1 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 77.4 | 72.6 |
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 2 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 3 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | NAV | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | $ 0 | $ 0 |
Evergy Metro | | |
Assets | | |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Evergy Metro | Fair Value, Measurements, Recurring | | |
Assets | | |
Total nuclear decommissioning trust | $ 440.1 | $ 401.3 |
Derivative Asset | 5.6 | 0 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (1) | (2.1) |
Total self-insured health plan trust | 16.9 | 15.7 |
Total Assets | 462.6 | 417 |
Derivative Liability | 0 | 3.6 |
FIN 39 Derivative liability netting | (1) | (2.1) |
Total Liabilities | 0 | 3.6 |
Evergy Metro | Fair Value, Measurements, Recurring | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 340.6 | 302.4 |
Total self-insured health plan trust | 2.2 | 2 |
Evergy Metro | Fair Value, Measurements, Recurring | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 3.4 | 3.2 |
Evergy Metro | Fair Value, Measurements, Recurring | U.S. Treasury | | |
Assets | | |
Total nuclear decommissioning trust | 47 | 47.9 |
Evergy Metro | Fair Value, Measurements, Recurring | State and local obligations | | |
Assets | | |
Total nuclear decommissioning trust | 2.2 | 3.8 |
Evergy Metro | Fair Value, Measurements, Recurring | Corporate bonds | | |
Assets | | |
Total nuclear decommissioning trust | 46.8 | 43.9 |
Evergy Metro | Fair Value, Measurements, Recurring | Foreign governments | | |
Assets | | |
Total nuclear decommissioning trust | 0.1 | 0.1 |
Evergy Metro | Fair Value, Measurements, Recurring | Debt securities | | |
Assets | | |
Total self-insured health plan trust | 11.4 | 9.4 |
Evergy Metro | Fair Value, Measurements, Recurring | Cash and cash equivalents | | |
Assets | | |
Total self-insured health plan trust | 3.3 | 4.3 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | | |
Assets | | |
Total nuclear decommissioning trust | 391 | 353.5 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total self-insured health plan trust | 8.1 | 8.8 |
Total Assets | 399.1 | 362.3 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 340.6 | 302.4 |
Total self-insured health plan trust | 2.2 | 2 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 3.4 | 3.2 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury | | |
Assets | | |
Total nuclear decommissioning trust | 47 | 47.9 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | State and local obligations | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Corporate bonds | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Foreign governments | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Debt securities | | |
Assets | | |
Total self-insured health plan trust | 2.6 | 2.5 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Cash and cash equivalents | | |
Assets | | |
Total self-insured health plan trust | 3.3 | 4.3 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | | |
Assets | | |
Total nuclear decommissioning trust | 49.1 | 47.8 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total self-insured health plan trust | 8.8 | 6.9 |
Total Assets | 57.9 | 54.7 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | State and local obligations | | |
Assets | | |
Total nuclear decommissioning trust | 2.2 | 3.8 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Corporate bonds | | |
Assets | | |
Total nuclear decommissioning trust | 46.8 | 43.9 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Foreign governments | | |
Assets | | |
Total nuclear decommissioning trust | 0.1 | 0.1 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Debt securities | | |
Assets | | |
Total self-insured health plan trust | 8.8 | 6.9 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Cash and cash equivalents | | |
Assets | | |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 6.6 | 2.1 |
Total self-insured health plan trust | 0 | 0 |
Total Assets | 6.6 | 2.1 |
Derivative Liability, Fair Value, Gross Liability | 1 | 5.7 |
Total Liabilities | 1 | 5.7 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | State and local obligations | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Corporate bonds | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Foreign governments | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Debt securities | | |
Assets | | |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Cash and cash equivalents | | |
Assets | | |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total self-insured health plan trust | 0 | 0 |
Total Assets | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Equity securities | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Cash equivalents | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | U.S. Treasury | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | State and local obligations | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Corporate bonds | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Foreign governments | | |
Assets | | |
Total nuclear decommissioning trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Debt securities | | |
Assets | | |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Cash and cash equivalents | | |
Assets | | |
Total self-insured health plan trust | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | | |
Assets | | |
Derivative Asset | 5.6 | 0 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (1) | (2.1) |
Derivative Liability | 0 | 3.6 |
FIN 39 Derivative liability netting | (1) | (2.1) |
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | Level 1 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | Level 2 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | Level 3 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 6.6 | 2.1 |
Derivative Liability, Fair Value, Gross Liability | 1 | 5.7 |
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | NAV | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | $ 0 | $ 0 |
Other Evergy | | |
Assets | | |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other, Other | Other, Other |
Other Evergy | Fair Value, Measurements, Recurring | | |
Assets | | |
Total rabbi trust | $ 8.5 | $ 8.8 |
Derivative Asset | 2.9 | 1.8 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (0.8) | (1) |
Total Assets | 11.4 | 10.6 |
Derivative Liability | 0 | 1.1 |
FIN 39 Derivative liability netting | (0.8) | (1) |
Total Liabilities | 0 | 1.1 |
Other Evergy | Fair Value, Measurements, Recurring | Core bond fund | | |
Assets | | |
Total rabbi trust | 8.5 | 8.8 |
Other Evergy | Fair Value, Measurements, Recurring | Level 1 | | |
Assets | | |
Total rabbi trust | 8.5 | 8.8 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total Assets | 8.5 | 8.8 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Level 1 | Core bond fund | | |
Assets | | |
Total rabbi trust | 8.5 | 8.8 |
Other Evergy | Fair Value, Measurements, Recurring | Level 2 | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total Assets | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 1.1 |
Total Liabilities | 0 | 1.1 |
Other Evergy | Fair Value, Measurements, Recurring | Level 2 | Core bond fund | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Level 3 | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 3.7 | 2.8 |
Total Assets | 3.7 | 2.8 |
Derivative Liability, Fair Value, Gross Liability | 0.8 | 1 |
Total Liabilities | 0.8 | 1 |
Other Evergy | Fair Value, Measurements, Recurring | Level 3 | Core bond fund | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | NAV | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Total Assets | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Total Liabilities | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | NAV | Core bond fund | | |
Assets | | |
Total rabbi trust | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | | |
Assets | | |
Derivative Asset | 2.9 | 1.8 |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (0.8) | (1) |
Derivative Liability | 0 | 0 |
FIN 39 Derivative liability netting | (0.8) | (1) |
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | Level 1 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | Level 2 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | Level 3 | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 3.7 | 2.8 |
Derivative Liability, Fair Value, Gross Liability | 0.8 | 1 |
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | NAV | | |
Assets | | |
Derivative Asset, Fair Value, Gross Asset | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability | $ 0 | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | | |
Assets | | |
Derivative Liability | | 1.1 |
FIN 39 Derivative liability netting | | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1 | | |
Assets | | |
Derivative Liability, Fair Value, Gross Liability | | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2 | | |
Assets | | |
Derivative Liability, Fair Value, Gross Liability | | 1.1 |
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 3 | | |
Assets | | |
Derivative Liability, Fair Value, Gross Liability | | 0 |
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | NAV | | |
Assets | | |
Derivative Liability, Fair Value, Gross Liability | | $ 0 |