Borrowings and Other Financing Instruments (Tables)

12 Months Ended

Dec. 31, 2015

At Dec. 31, 2015, SPS had the following committed credit facility available (in millions):


^(a)	This credit facility matures in 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, 2015
Borrowing limit	$	100
Amount outstanding at period end	—
Average amount outstanding	29
Maximum amount outstanding	89
Weighted average interest rate, computed on a daily basis	0.36		%
Weighted average interest rate at period end	N/A



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2015			Twelve Months Ended Dec. 31, 2014			Twelve Months Ended Dec. 31, 2013
Borrowing limit	$	100		$	100		$	100
Amount outstanding at period end	—			16			38
Average amount outstanding	21			9			46
Maximum amount outstanding	100			100			100
Weighted average interest rate, computed on a daily basis	0.40		%	0.22		%	0.29		%
Weighted average interest rate at end of period	N/A			0.45			0.25

Commercial paper outstanding for SPS was as follows:



(Amounts in Millions, Except Interest Rates)	Three Months Ended Dec. 31, 2015
Borrowing limit	$	400
Amount outstanding at period end	15
Average amount outstanding	4
Maximum amount outstanding	55
Weighted average interest rate, computed on a daily basis	0.45		%
Weighted average interest rate at period end	0.60



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2015			Twelve Months Ended Dec. 31, 2014			Twelve Months Ended Dec. 31, 2013
Borrowing limit	$	400		$	400		$	300
Amount outstanding at period end	15			37			84
Average amount outstanding	100			83			32
Maximum amount outstanding	246			241			140
Weighted average interest rate, computed on a daily basis	0.46		%	0.26		%	0.30		%
Weighted average interest rate at end of period	0.60			0.47			0.27