XML 33 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2020
Feb. 19, 2021
Jun. 30, 2020
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Document Transition Report false    
Entity File Number 001-38515    
Entity Registrant Name EVERGY, INC.    
Entity Tax Identification Number 82-2733395    
Entity Incorporation, State or Country Code MO    
Entity Address, Address Line One 1200 Main Street    
Entity Address, City or Town Kansas City    
Entity Address, State or Province MO    
Entity Address, Postal Zip Code 64105    
City Area Code 816    
Local Phone Number 556-2200    
Title of 12(b) Security Evergy, Inc. common stock    
Trading Symbol EVRG    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   226,944,941  
Entity Central Index Key 0001711269    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Amendment Flag false    
Document Fiscal Year Focus 2020    
Entity Public Float     $ 13,410,149,293
Evergy Kansas Central      
Entity Information [Line Items]      
Entity File Number 001-03523    
Entity Registrant Name EVERGY KANSAS CENTRAL, INC.    
Entity Tax Identification Number 48-0290150    
Entity Incorporation, State or Country Code KS    
Entity Address, Address Line One 818 South Kansas Avenue    
Entity Address, City or Town Topeka    
Entity Address, State or Province KS    
Entity Address, Postal Zip Code 66612    
City Area Code 785    
Local Phone Number 575-6300    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   1  
Entity Central Index Key 0000054507    
Evergy Metro      
Entity Information [Line Items]      
Entity File Number 000-51873    
Entity Registrant Name EVERGY METRO, INC.    
Entity Tax Identification Number 44-0308720    
Entity Incorporation, State or Country Code MO    
Entity Address, Address Line One 1200 Main Street    
Entity Address, City or Town Kansas City    
Entity Address, State or Province MO    
Entity Address, Postal Zip Code 64105    
City Area Code 816    
Local Phone Number 556-2200    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   1  
Entity Central Index Key 0000054476