Lines of Credit and Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Outstanding debt obligations

The following tables summarize our outstanding debt obligations and their classification in the accompanying Consolidated Balance Sheets (in millions):

	As of December 31,
	2021		2020
Current maturities of long-term debt:
Asset securitization program	$	—	$	—
Finance lease obligations	11.3		10.1
Debt issuance costs	—		(0.2)
Total current maturities of long-term debt	$	11.3	$	9.9
Long-Term Debt:
Asset Securitization Program	$	250.0	$	—
Finance lease obligations	29.0		29.3
Domestic credit facility	6.5		—
Senior unsecured notes	950.0		950.0
Debt issuance costs	(9.0)		(8.6)
Total long-term debt	$	1,226.5	$	970.7
Total debt	$	1,237.8	$	980.6

Aggregate amounts of required principal payments on total debt

As of December 31, 2021, the aggregate amounts of required principal payments on total debt excluding finance lease obligations (see Note 5) were as follows (in millions):

2022	$	—
2023	600.0
2024	—
2025	300.0
2026	6.5
Thereafter	300.0

Eligible amounts available and beneficial interests sold

The eligible amounts available and beneficial interests sold were as follows (in millions):

	As of December 31,
	2021		2020
Eligible amount available under the ASP on qualified accounts receivable	$	335.6	$	279.1
Less: Beneficial interest transferred	(250.0)		—
Remaining amount available	$	85.6	$	279.1

Summary of weighted average borrowing rate facility

Below is a summary of the weighted average interest rate for both December 31, 2021 and 2020:

	As of December 31,
	2021		2020
Weighted average borrowing rate	1.38	%	—	%