Borrowings and Other Financing Instruments (Tables)

12 Months Ended

Dec. 31, 2014

At Dec. 31, 2014, SPS had the following committed credit facility available (in millions):


^(a)	These credit facilities have been amended to extend the maturity to October 2019.


^(b)	Includes outstanding commercial paper and letters of credit.

Money pool borrowings for SPS were as follows:



(Amounts in Millions, Except Interest Rates)	Three Months Ended Dec. 31, 2014
Borrowing limit	$	100
Amount outstanding at period end	16
Average amount outstanding	—
Maximum amount outstanding	16
Weighted average interest rate, computed on a daily basis	0.35		%
Weighted average interest rate at period end	0.45



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2014			Twelve Months Ended Dec. 31, 2013			Twelve Months Ended Dec. 31, 2012
Borrowing limit	$	100		$	100		$	100
Amount outstanding at period end	16			38			—
Average amount outstanding	9			46			10
Maximum amount outstanding	100			100			63
Weighted average interest rate, computed on a daily basis	0.22		%	0.29		%	0.33		%
Weighted average interest rate at end of period	0.45			0.25			N/A

Commercial paper outstanding for SPS was as follows:



(Amounts in Millions, Except Interest Rates)	Three Months Ended Dec. 31, 2014
Borrowing limit	$	400
Amount outstanding at period end	37
Average amount outstanding	22
Maximum amount outstanding	54
Weighted average interest rate, computed on a daily basis	0.31		%
Weighted average interest rate at period end	0.47



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2014			Twelve Months Ended Dec. 31, 2013			Twelve Months Ended Dec. 31, 2012
Borrowing limit	$	400		$	300		$	300
Amount outstanding at period end	37			84			9
Average amount outstanding	83			32			18
Maximum amount outstanding	241			140			106
Weighted average interest rate, computed on a daily basis	0.26		%	0.30		%	0.39		%
Weighted average interest rate at end of period	0.47			0.27			0.36