Debt - Maturity of Long Term Debt (Details) - Revolving Credit Facility - Term Loan due 2027 at 2.83% and 3.15% at September 30, 2021 and December 31, 2020, respectively. - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Remainder of 2021	$ 5.5
2022	21.8
2023	21.8
2024	21.8
2025	21.8
2026	21.8
Thereafter	2,052.6
Total	$ 2,167.1	$ 2,183.5

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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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

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