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

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

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Debt - Summary of Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Feb. 28, 2018	Feb. 02, 2018	Aug. 31, 2017	Mar. 31, 2016	Nov. 30, 2010
Debt Instrument [Line Items]
Long-term debt	$ 1,506.0	$ 1,737.1
Term loan, current portion	34.4
Notes 2022 Term \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 298.8	$ 298.3
Senior notes, stated percentage	3.625%	3.625%					3.625%
Notes 2026 Term \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 395.7	$ 395.1
Senior notes, stated percentage	3.35%	3.35%				3.35%
Notes 2027 Term \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 295.9	$ 295.4
Senior notes, stated percentage	3.15%	3.15%			3.15%
Notes 2028 Term \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 444.0	$ 443.3
Senior notes, stated percentage	3.50%	3.50%	3.50%	3.50%
Notes 2023 Term \| Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 71.6	$ 305.0
Term loan, current portion	$ 34.4	$ 25.0