XML 77 R57.htm IDEA: XBRL DOCUMENT v3.19.1
RECEIVABLES (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other receivables $ 77.5 $ 95.0
Allowance for doubtful accounts (9.8) (9.2)
Total 164.8 193.7
Westar Energy    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other receivables 61.2 71.6
Allowance for doubtful accounts (4.2) (3.9)
Total 90.4 84.3
KCP&L    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other receivables 11.9 15.8
Allowance for doubtful accounts (4.0) (3.8)
Total 41.8 62.7
Customer accounts receivable | Billed    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Customer accounts receivable 15.0 16.7
Customer accounts receivable | Billed | Westar Energy    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Customer accounts receivable 0.0 0.0
Customer accounts receivable | Billed | KCP&L    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Customer accounts receivable 8.0 7.8
Customer accounts receivable | Unbilled    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Customer accounts receivable 82.1 91.2
Customer accounts receivable | Unbilled | Westar Energy    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Customer accounts receivable 33.4 16.6
Customer accounts receivable | Unbilled | KCP&L    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Customer accounts receivable $ 25.9 $ 42.9