Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt consists of the following (in millions):

	March 31, 2020		December 31, 2019
Amounts borrowed (Credit Facility)	$	313.0	$	324.8
Obligations under finance leases	63.7		57.3
Total long-term debt	$	376.7	$	382.1

Amounts related to the Credit Facility are as follows (in millions, except interest rate data):

	March 31, 2020		December 31, 2019
Amounts borrowed, net	$	313.0	$	324.8
Outstanding letters of credit	19.7		16.7
Amounts available to borrow(1)	408.3		341.7
Unamortized debt issuance costs	1.5		1.7

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(1) Subject to borrowing base limitations, and excluding expansion feature of $200 million.

	Three Months Ended
	March 31,
	2020			2019
Average borrowings	$	336.4		$	277.6
Range of borrowings	151.5 - 499.3			160.0 - 390.0
Unused Credit Facility and letter of credit participation fees(1)	0.3			0.3
Amortization of debt issuance costs(1)	0.2			0.2
Weighted-average interest rate(2)	2.7		%	3.7		%

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(1) Included in interest expense, net.

(2) Calculated based on the daily cost of borrowing, reflecting a blend of prime and LIBOR rates.