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Schedule II, Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II, Valuation and Qualifying Accounts
Xcel Energy Inc. and Subsidiaries Valuation and Qualifying Accounts Years Ended Dec. 31
Allowance for bad debtsNOL and tax credit valuation allowances
(Millions of Dollars)202320222021202320222021
Balance at Jan. 1$122 $106 $79 $62 $64 $64 
Additions charged to costs and expenses79 73 60 26 6 5 
Additions charged to other accounts13 
(a)
26 
(a)
14 
(a)
— — — 
Deductions from reserves(86)
(b)
(83)
(b)
(47)
(b)
(18)
(c)
(8)
(c)
(5)
(c)
Balance at Dec. 31$128 $122 $106 $70 $62 $64 
(a)Recovery of amounts previously written-off.
(b)Deductions related primarily to bad debt write-offs.
(c)Primarily reversals of valuation allowances on completed tax credit sales and reductions of valuation allowances for items forecasted to be used prior to expiration.