Borrowings and Other Financing Instruments (Tables)

12 Months Ended

Dec. 31, 2016

At Dec. 31, 2016, SPS had the following committed credit facility available (in millions):


^(a)	This credit facility matures in June 2021.


^(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, 2016
Borrowing limit	$	100
Amount outstanding at period end	—
Average amount outstanding	20
Maximum amount outstanding	64
Weighted average interest rate, computed on a daily basis	0.83		%
Weighted average interest rate at period end	N/A



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2016			Twelve Months Ended Dec. 31, 2015			Twelve Months Ended Dec. 31, 2014
Borrowing limit	$	100		$	100		$	100
Amount outstanding at period end	—			—			16
Average amount outstanding	28			21			9
Maximum amount outstanding	100			100			100
Weighted average interest rate, computed on a daily basis	0.67		%	0.40		%	0.22		%
Weighted average interest rate at end of period	N/A			N/A			0.45

Commercial paper outstanding for SPS was as follows:



(Amounts in Millions, Except Interest Rates)	Three Months Ended Dec. 31, 2016
Borrowing limit	$	400
Amount outstanding at period end	50
Average amount outstanding	19
Maximum amount outstanding	75
Weighted average interest rate, computed on a daily basis	0.74		%
Weighted average interest rate at period end	0.95



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2016			Twelve Months Ended Dec. 31, 2015			Twelve Months Ended Dec. 31, 2014
Borrowing limit	$	400		$	400		$	400
Amount outstanding at period end	50			15			37
Average amount outstanding	43			100			83
Maximum amount outstanding	140			246			241
Weighted average interest rate, computed on a daily basis	0.67		%	0.46		%	0.26		%
Weighted average interest rate at end of period	0.95			0.60			0.47