Fair Value Measurement - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts receivable, net	$ 780.5		$ 675.3
Accounts receivable, allowances	13.9		10.6
Increase in accounts receivable, allowances	(3.3)
Available for sale debt securities	65.6		54.0
Available for sale debt securities, amortized cost	66.6		53.3
Available for sale debt securities, allowance for credit losses	0.0
Available for sale debt securities, unrealized losses	1.2		0.1
Available for sale debt securities with unrealized losses, fair value	49.6		12.2
Trading securities	20.2		24.5
Purchase of trading securities related to deferred compensation plans	1.9	$ 2.3
Proceeds from securities sold	2.4	$ 3.0
Long-term debt	1,436.7		1,435.5
Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	1,436.7		1,435.5
Long-term debt, fair value	$ 1,355.6		$ 1,524.5

Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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