v3.24.0.1
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Cash and Cash Equivalents The following table presents the line items and amounts of cash, cash equivalents, and restricted cash reported in the balance sheet and reconciles their sum to Cash, Cash Equivalents, and Restricted Cash, End of Period on the Consolidated Statements of Cash Flows:
Years Ended December 31,
(in millions)202320222021
Cash and Cash Equivalents$9 $16 $10 
Restricted Cash included in:
Investments and Other Property24 22 20 
Current Assets—Other10 13 3 
Total Cash, Cash Equivalents, and Restricted Cash$43 $51 $33 
Schedule of Restricted Cash The following table presents the line items and amounts of cash, cash equivalents, and restricted cash reported in the balance sheet and reconciles their sum to Cash, Cash Equivalents, and Restricted Cash, End of Period on the Consolidated Statements of Cash Flows:
Years Ended December 31,
(in millions)202320222021
Cash and Cash Equivalents$9 $16 $10 
Restricted Cash included in:
Investments and Other Property24 22 20 
Current Assets—Other10 13 3 
Total Cash, Cash Equivalents, and Restricted Cash$43 $51 $33 
AFUDC Rates
The average AFUDC rates on regulated construction expenditures are included in the table below:
202320222021
Average AFUDC Rates6.91 %6.74 %6.88 %
Summary Of Average Annual Depreciation Rates For All Utility Plants
Below are the average annual depreciation rates for all utility plant:
202320222021
Average Annual Depreciation Rates3.01 %3.24 %3.30 %
Schedule Of Lease Assets And Liabilities
TEP has operating leases for office facilities, land, rail cars, and communication tower space that are included in the balance sheet as follows:
December 31,
(in millions)20232022
Lease Assets
Regulatory and Other Assets, Other$5 $6 
Lease Liabilities
Current Liabilities, Other1 1 
Regulatory and Other Liabilities, Other4 5 
Schedule Of Renewable Energy Credit The table below summarizes the balance of TEP's RECs that are included in Regulatory and Other Assets—Other on
the Consolidated Balance Sheets:
December 31,
(in millions)20232022
Beginning of Period$82 $69 
Purchased57 58 
Used for Compliance(45)(45)
End of Period$94 $82