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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Debt - Summary of Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Mar. 12, 2021	Dec. 31, 2020	Feb. 28, 2018	Aug. 31, 2017	Mar. 31, 2016
Debt Instrument [Line Items]
Long-term debt	$ 1,435.5		$ 1,436.9
Notes 2022 Term \| Senior Notes
Debt Instrument [Line Items]
Senior notes, stated percentage	3.625%	3.625%
Long-term debt	$ 0.0		299.2
Notes 2026 Term \| Senior Notes
Debt Instrument [Line Items]
Senior notes, stated percentage	3.35%					3.35%
Long-term debt	$ 397.2		396.5
Notes 2027 Term \| Senior Notes
Debt Instrument [Line Items]
Senior notes, stated percentage	3.15%				3.15%
Long-term debt	$ 297.0		296.4
Notes 2028 Term \| Senior Notes
Debt Instrument [Line Items]
Senior notes, stated percentage	3.50%			3.50%
Long-term debt	$ 445.5		444.8
Notes 2031 Term \| Senior Notes
Debt Instrument [Line Items]
Senior notes, stated percentage	2.30%
Long-term debt	$ 295.8		$ 0.0