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Debt and Credit Arrangements - Summary of Outstanding Borrowings (Details) € in Millions | Dec. 31, 2021 USD ($) | Dec. 31, 2021 EUR (€) | Oct. 18, 2021 USD ($) | Jan. 01, 2021 USD ($) | Dec. 31, 2020 USD ($) | Nov. 06, 2017 USD ($)
--- | --- | --- | --- | --- | --- | ---
Debt Instrument |  |  |  |  |  |
Senior secured revolving credit facility and term loan, net of debt issuance costs | $ 859,600,000 |  |  |  |  |
Total debt, net of unamortized discount and debt issuance costs | 856,700,000 |  |  |  | $ 442,500,000 |
Less: current maturities | 255,900,000 |  |  |  | 220,900,000 |
Long-term debt | 600,800,000 |  |  |  | 221,600,000 |
Convertible Notes, due 2024 | Convertible Debt |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Unamortized debt issuance costs | (2,900,000) |  |  |  | (3,100,000) |
Principal amount | 258,800,000 |  |  |  | 258,800,000 | $ 258,800,000
Unamortized discount | 0 |  |  | $ (3,900,000) | (34,800,000) |
Convertible notes due November 2024, net of unamortized discount and debt issuance costs | 255,900,000 |  |  |  | 220,900,000 |
Revolving Credit Facility |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Unamortized debt issuance costs | 0 |  |  |  | (5,000,000.0) |
Senior secured revolving credit facility and term loan, net of debt issuance costs | 600,800,000 |  |  |  | 221,600,000 |
Revolving Credit Facility | Senior secured revolving credit facility due October 2026 |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Long-term debt, gross | 600,800,000 |  |  |  | 0 |
Potential periodic increase to maximum borrowing amount | 500,000,000.0 |  |  |  |  |
Potential increase to maximum borrowing amount | $ 25,000,000.0 |  |  |  |  |
Debt instrument weighted average interest rate (percent) | 2.10% | 2.10% |  |  |  |
Line of credit remaining borrowing amount | $ 369,200,000 |  |  |  |  |
Revolving Credit Facility | Term long due June 2024 |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Long-term debt, gross | 0 |  |  |  | 103,100,000 |
Revolving Credit Facility | Senior secured revolving credit facility due June 2024 |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Long-term debt, gross | 0 |  |  |  | 123,500,000 |
Unamortized debt issuance costs | (8,700,000) |  |  |  |  |
Maximum borrowing capacity |  |  | $ 1,000,000,000 |  |  |
Letter of credit outstanding | 30,000,000.0 |  |  |  |  |
Revolving Credit Facility | Foreign facilities |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Letter of credit outstanding | 31,200,000 |  |  |  | 47,700,000 |
Line of credit remaining borrowing amount | 82,400,000 |  |  |  | $ 77,400,000 |
Revolving Credit Facility | Euro Demoninated Senior Secured Revolving Credit Facility 2024 Credit Facilities |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Long-term debt, gross | 88,300,000 | € 78.0 |  |  |  |
Revolving Credit Facility Sub-limit - Letters of Credit | Senior secured revolving credit facility due October 2026 |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Maximum borrowing capacity | 100,000,000.0 |  |  |  |  |
Revolving Credit Facility Sub-limit - Discretionary Letters of Credit | Senior secured revolving credit facility due October 2026 |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Maximum borrowing capacity | 250,000,000.0 |  |  |  |  |
Revolving Credit Facility Sub-limit - Swingline | Senior secured revolving credit facility due October 2026 |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Maximum borrowing capacity | $ 100,000,000.0 |  |  |  |  |

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