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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Debt and Financing Arrangements - Schedule of Long Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2021	Apr. 02, 2021	Mar. 12, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt	$ 1,434.2			$ 1,436.9
Senior Notes
Debt Instrument [Line Items]
Long-term debt	1,434.2			$ 1,436.9
Senior Notes \| Senior notes at 3.625%
Debt Instrument [Line Items]
Interest rate, stated percentage		3.625%		3.625%
Long-term debt	$ 0.0			$ 299.2
Senior Notes \| Senior notes at 3.35%
Debt Instrument [Line Items]
Interest rate, stated percentage	3.35%
Long-term debt	$ 396.8			396.5
Senior Notes \| Senior notes at 3.15%
Debt Instrument [Line Items]
Interest rate, stated percentage	3.15%
Long-term debt	$ 296.7			296.4
Senior Notes \| Senior notes at 3.50%
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%
Long-term debt	$ 445.1			444.8
Senior Notes \| Senior notes at 2.300%
Debt Instrument [Line Items]
Interest rate, stated percentage	2.30%		2.30%
Long-term debt	$ 295.6			$ 0.0