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Debt - Long Term Debt (Details) - USD ($) $ in Millions	Mar. 16, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 22, 2020	Jul. 05, 2019	Jun. 04, 2019	Jul. 02, 2018
Debt Instrument [Line Items]
Long-term Debt		$ 1,122.6	$ 1,172.8
Secured Debt
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 50.0
Secured Debt | Term Loan due July 5, 2023
Debt Instrument [Line Items]
Long-term Debt		0.0	49.9		$ 49.9
Line of credit facility, maximum borrowing capacity						$ 50.0
Senior Notes
Debt Instrument [Line Items]
Long-term Debt		448.9	448.8
Senior Notes | 5.000% Senior Notes due September 19, 2022
Debt Instrument [Line Items]
Long-term Debt		$ 277.9	278.3
Stated interest rate							5.00%
Senior Notes | 4.350% Senior Notes due February 15, 2025
Debt Instrument [Line Items]
Stated interest rate		4.35%
Senior Notes | 2.400% Senior Notes due September 30, 2030
Debt Instrument [Line Items]
Long-term Debt		$ 395.8	$ 395.8
Stated interest rate				2.40%

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- Definition

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

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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