Borrowings and Other Financing Instruments (Tables)

12 Months Ended

Dec. 31, 2013

Borrowings and Other Financing Instruments [Abstract]

At Dec. 31, 2013, PSCo had the following committed credit facility available (in millions of dollars):



Credit Facility ^(a)		Drawn ^(b)		Available
$	700.0	$	6.4	$	693.6


^(a)	Credit facility expires in July 2017.


^(b)	Includes outstanding letters of credit.

Money Pool

Borrowings and Other Financing Instruments [Abstract]

Short-Term Borrowings

Money Pool — Xcel Energy Inc. and its utility subsidiaries have established a money pool arrangement that allows for short-term investments in and borrowings between the utility subsidiaries. Xcel Energy Inc. may make investments in the utility subsidiaries at market-based interest rates; however, the money pool arrangement does not allow the utility subsidiaries to make investments in Xcel Energy Inc. PSCo had no money pool borrowings outstanding during the three months ended Dec. 31, 2013. Money pool borrowings for PSCo were as follows:



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2013			Twelve Months Ended Dec. 31, 2012			Twelve Months Ended Dec. 31, 2011
Borrowing limit	$	250		$	250		$	250
Amount outstanding at period end	—			—			—
Average amount outstanding	0.1			0.3			3
Maximum amount outstanding	12			8			53
Weighted average interest rate, computed on a daily basis	0.36		%	0.33		%	0.35		%
Weighted average interest rate at period end	N/A			N/A			N/A

Commercial Paper

Borrowings and Other Financing Instruments [Abstract]

Short-Term Borrowings

Commercial Paper — PSCo meets its short-term liquidity requirements primarily through the issuance of commercial paper and borrowings under its credit facility. PSCo had no commercial paper borrowings outstanding during the three months ended Dec. 31, 2013. Commercial paper borrowings for PSCo were as follows:



(Amounts in Millions, Except Interest Rates)	Twelve Months Ended Dec. 31, 2013			Twelve Months Ended Dec. 31, 2012			Twelve Months Ended Dec. 31, 2011
Borrowing limit	$	700		$	700		$	700
Amount outstanding at period end	—			154			—
Average amount outstanding	38			8			73
Maximum amount outstanding	332			165			304
Weighted average interest rate, computed on a daily basis	0.34		%	0.33		%	0.37		%
Weighted average interest rate at period end	N/A			0.35			N/A