Description of the business: Financial instruments (Details) $ in Millions	Jun. 30, 2023 USD ($)
Level 2 \| Interest rate swap
Description of the business:
long-term liability	$ 51.6
Senior secured 2026 Notes
Description of the business:
Senior notes	$ 500.0
Interest rate (as a percent)	3.50%
Senior secured 2026 Notes \| Level 2
Description of the business:
Senior notes, fair value	$ 461.3
Senior unsecured 2027 Notes
Description of the business:
Senior notes	450.0
Senior unsecured 2027 Notes \| Level 2
Description of the business:
Senior notes, fair value	$ 433.1
2027 Notes
Description of the business:
Interest rate (as a percent)	7.00%

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of obligation due after one year or beyond the normal operating cycle, if longer.

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