Indebtedness (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Components of Long-term Debt

Long-term debt consisted of the following at December 31, 2023 and 2022 (in millions):

	December 31, 2023		December 31, 2022
Credit facility, expires 2027	$	—	$	200.0
1.002% EIB Senior term loan due 2025	276.7		267.3
EIB Senior Term Loan due 2029	276.7		—
Senior term loans due between 2023 and 2028	162.1		341.6
0.800% Senior Notes Due 2028	664.0		641.5
Other long-term debt	3.1		5.1
Debt issuance costs	(3.1)		(3.6)
	1,379.5		1,451.9
Less: Senior term loans due 2023, net of debt issuance costs	—		(184.9)
Current portion of other long-term debt	(2.3)		(2.2)
Total long-term indebtedness	$	1,377.2	$	1,264.8

Maturities of Long-term Debt

At December 31, 2023, the aggregate scheduled maturities of long-term debt, excluding the current portion of long-term debt, are as follows (in millions):

2025	$	346.3
2026	58.2
2027	0.2
2028	698.4
Thereafter	274.1
	$	1,377.2