DEBT AND CREDIT AGREEMENTS (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of long-term debt instruments

The following table presents the components of Long-Term Debt, Net on the Consolidated Balance Sheets:

			December 31,
($ in millions)	Interest Rate	Maturity Date	2019		2018
Notes
2011 Notes	5.15%	2021	$	250	$	250
2012 Notes	3.85%	2023	150		150
2014 Notes	5.00%	2044	150		150
2015 Notes	3.05%	2025	300		300
2018 Notes	4.85%	2048	300		300
Tax-Exempt Local Furnishings Bonds (1)
2010 Pima A	5.25%	2040	100		100
2012 Pima A	4.50%	2030	16		16
2013 Pima A	4.00%	2029	91		91
Tax-Exempt Pollution Control Bonds (2)
2009 Pima A	4.95%	2020	80		80
2009 Coconino A	5.13%	2032	—		15
2012 Apache A	4.50%	2030	177		177
Total Long-Term Debt (3)			1,614		1,629
Less Unamortized Discount and Debt Issuance Costs			12		14
Less Current Maturities of Long-Term Debt			80		—
Total Long-Term Debt, Net			$	1,522	$	1,615

⁽¹⁾  The 2010 Pima A bonds can be redeemed at par on or after October 2020. TEP has the option to redeem the remaining bonds at par on dates ranging from first quarter of 2022 to first quarter of 2023.

⁽²⁾  The 2009 Pima A bonds mature in October 2020. The 2012 Apache A bonds may be redeemed at par in the first quarter of 2022.

⁽³⁾ 

As of December 31, 2019, all of TEP's debt is unsecured.

Schedule of maturities of long-term debt

Long-term debt matures on the following dates:

(in millions)	Long-Term Debt (1)
2020	$	80
2021	250
2022	—
2023	150
2024	—
Thereafter	1,134
Total	$	1,614

⁽¹⁾ 

Total long-term debt excludes $10 million of related unamortized debt issuance costs and $2 million of unamortized original issue discount.

Schedule of line of credit facilities

Terms are as follows:

							Weighted Average Interest Rate
	Capacity		Borrowed (1)		Available				Pricing
(in millions)	December 31, 2019
Term Loan	$	225	$	165	$	60	4.75	%	LIBOR + 0.550%	or ABR + 0.00%

⁽¹⁾ 

All amounts borrowed will be due and payable by December 2020.

Terms are as follows:

	Capacity		Sub-Limit LOC		Borrowed		Available		Weighted Average Interest Rate		Pricing (1)
(in millions)	December 31, 2019
Revolver and LOC	$	250	$	50	$	—	$	250	—	%	LIBOR + 1.000%	or ABR + 0.00%

(in millions)	December 31, 2018
Revolver and LOC	$	250	$	50	$	—	$	250	—	%	LIBOR + 1.000%	or ABR + 0.00%

⁽¹⁾  Interest rates and fees are based on a pricing grid tied to TEP's credit rating.