Borrowings and Other Financing Instruments (Tables)

3 Months Ended

Mar. 31, 2020

Borrowings and Other Financing Instruments [Abstract]

Credit Facilities

At March 31, 2020, PSCo had the following committed revolving credit facility available (in millions of dollars):

Credit Facility (a)		Outstanding (b)		Available
$	700	$	8	$	692

^(a)    This credit facility expires in June 2024.

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

Money Pool

Borrowings and Other Financing Instruments [Abstract]

Short-Term Borrowings

Money pool borrowings for PSCo were as follows:

(Amounts in Millions, Except Interest Rates)	Three Months Ended March 31, 2020			Year Ended Dec. 31, 2019
Borrowing limit	$	250		$	250
Amount outstanding at period end	196			39
Average amount outstanding	34			7
Maximum amount outstanding	208			50
Weighted average interest rate, computed on a daily basis	1.38		%	2.29		%
Weighted average interest rate at period end	1.15			1.63		%

Commercial Paper

Borrowings and Other Financing Instruments [Abstract]

Short-Term Borrowings

Commercial paper outstanding for PSCo was as follows:

(Amounts in Millions, Except Interest Rates)	Three Months Ended March 31, 2020			Year Ended Dec. 31, 2019
Borrowing limit	$	700		$	700
Amount outstanding at period end	—			—
Average amount outstanding	90			154
Maximum amount outstanding	230			432
Weighted average interest rate, computed on a daily basis	1.95		%	2.67		%
Weighted average interest rate at period end	N/A			N/A