SHORT-TERM DEBT AND LINES OF CREDIT (Tables)

12 Months Ended

Dec. 31, 2021

Short-term Debt [Abstract]

Short-term debt balances and their corresponding weighted-average interest rates

The following table shows our short-term borrowings and their corresponding weighted-average interest rates as of December 31:

(in millions, except percentages)	2021			2020
Commercial paper
Amount outstanding at December 31	$	331.0		$	210.5
Average interest rate on amounts outstanding at December 31	0.21		%	0.18		%

Schedule of revolving credit facilities and remaining available capacity

The information in the table below relates to our revolving credit facility used to support our commercial paper borrowing program, including remaining available capacity under this facility as of December 31:

(in millions)	Maturity	2021
Revolving credit facility (1)	October 2022	$	400.0
Less:
Letters of credit issued inside credit facility		1.3
Commercial paper outstanding		331.0
Available capacity under existing agreement		$	67.7

(1)    We intend to request approval from the PSCW to extend the maturity of our credit facility to September 2026. Lenders have agreed to the extension, subject to our receipt of PSCW approval.