v3.26.1
Segments and Related Information (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Segment Reporting Information [Line Items]        
Number of segments | segment     1  
OPERATING REVENUES $ 1,500.1 $ 1,437.0 $ 2,943.8 $ 2,811.5
Fuel and purchased power 328.5 330.4 688.5 685.7
SPP network transmission costs 118.8 114.9 228.4 211.3
Depreciation and amortization 304.3 288.4 609.6 576.5
Taxes other than income tax 107.0 104.4 214.2 215.5
Interest expense 165.9 153.8 340.4 306.3
Income tax expense 16.4 10.0 19.8 19.6
Less: Net income attributable to noncontrolling interests 3.1 3.1 6.2 6.2
Total other income (expense), net 18.3 (7.4) 30.0 (10.4)
Equity in earnings of equity method investees, net of income taxes 1.5 1.8 3.9 3.4
Net income attributable to Evergy, Inc. 215.0 171.3 366.5 296.3
Operating Segments [Member] | Evergy Companies        
Segment Reporting Information [Line Items]        
OPERATING REVENUES 1,500.1 1,437.0 2,943.8 2,811.5
Fuel and purchased power 328.5 330.4 688.5 685.7
SPP network transmission costs 118.8 114.9 228.4 211.3
Operations and customer 164.5 164.6 311.2 311.7
Support 45.4 40.4 81.7 73.4
Other segment costs 51.0 50.1 111.2 102.0
Depreciation and amortization 304.3 288.4 609.6 576.5
Taxes other than income tax 107.0 104.4 214.2 215.5
Interest expense 165.9 153.8 340.4 306.3
Income tax expense 16.4 10.0 19.8 19.6
Less: Net income attributable to noncontrolling interests 3.1 3.1 6.2 6.2
Total other income (expense), net 18.3 (7.4) 30.0 (10.4)
Equity in earnings of equity method investees, net of income taxes 1.5 1.8 3.9 3.4
Net income attributable to Evergy, Inc. $ 215.0 $ 171.3 $ 366.5 $ 296.3