Borrowings and Other Financing Instruments (Tables)

9 Months Ended

Sep. 30, 2014

Borrowings and Other Financing Instruments [Abstract]

Credit Facilities

At Sept. 30, 2014, NSP-Wisconsin had the following committed credit facility available (in millions of dollars):

Credit Facility (a)		Drawn(b)		Available
$	150.0	$	8.0	$	142.0

^(a)  Credit facility has been amended to expire in October 2019.

^(b)  Includes outstanding commercial paper.

Commercial Paper

Borrowings and Other Financing Instruments [Abstract]

Short-Term Borrowings

Commercial paper outstanding for NSP-Wisconsin was as follows:

(Amounts in Millions, Except Interest Rates)	Three Months Ended Sept. 30, 2014			Twelve Months Ended Dec. 31, 2013
Borrowing limit	$	150		$	150
Amount outstanding at period end	8			68
Average amount outstanding	7			20
Maximum amount outstanding	22			71
Weighted average interest rate, computed on a daily basis	0.24		%	0.31		%
Weighted average interest rate at period end	0.25			0.27

Notes Payable To Affiliates

Borrowings and Other Financing Instruments [Abstract]

Short-Term Borrowings

Other Short-Term Borrowings— The following table presents the notes payable of Clearwater Investments, Inc., a NSP-Wisconsin subsidiary, to Xcel Energy Inc.:

(Amounts in Millions, Except Interest Rates)	Sept. 30, 2014			Dec. 31, 2013
Notes payable to affiliates	$	0.5		$	0.5
Weighted average interest rate at period end	0.35		%	0.24		%