Financing (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Information concerning the maturities and interest rates on the PNM 2018 SUNs is as follows:

Funding	Maturity	Principal		Interest
Date	Date	Amount		Rate
		(In millions)
May 14, 2018	May 15, 2023	$	55.0	3.15	%
May 14, 2018	May 15, 2025	104.0		3.45	%
May 14, 2018	May 15, 2028	88.0		3.68	%
May 14, 2018	May 15, 2033	38.0		3.93	%
May 14, 2018	May 15, 2038	45.0		4.22	%
May 14, 2018	May 15, 2048	20.0		4.50	%
		350.0
July 31, 2018	August 1, 2028	15.0		3.78	%
July 31, 2018	August 1, 2048	85.0		4.60	%
		100.0
		$	450.0

Schedule of Short-term Debt

Short-term debt outstanding consisted of:

	September 30,		December 31,
Short-term Debt	2018		2017
	(In thousands)
PNM:
PNM Revolving Credit Facility	$	—	$	39,800
PNM 2017 New Mexico Credit Facility	—		—
	—		39,800
TNMP Revolving Credit Facility	17,500		—
PNMR:
PNMR Revolving Credit Facility	120,600		165,600
PNMR 2016 One-Year Term Loan (as extended)	100,000		100,000
PNMR Development Revolving Credit Facility	24,500		—
	$	262,600	$	305,400