Financing Arrangements - Narrative (Details) - USD ($) $ in Millions					9 Months Ended
	Jun. 25, 2019	Sep. 18, 2018	Sep. 11, 2018	Sep. 01, 2018	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Short-term Debt [Line Items]
Short-term debt					$ 27.9		$ 119.8
Borrowings guarantees					42.5
Fair value of amount outstanding					1,428.1		1,444.8
Cash and cash equivalents					261.8		320.3
Proceeds from long-term debt					215.0	$ 550.0
Cone Drive
Short-term Debt [Line Items]
Effective date of acquisition				Sep. 01, 2018
Rollon
Short-term Debt [Line Items]
Effective date of acquisition		Sep. 18, 2018
Net Debt Construct
Short-term Debt [Line Items]
Cash and cash equivalents					$ 25.0
Line of Credit Accounts Receivable
Short-term Debt [Line Items]
Line of credit expiration date					Nov. 30, 2021
Line of Credit Accounts Receivable
Short-term Debt [Line Items]
Maximum borrowing capacity under line of credit					$ 100.0
Current borrowing capacity					0.0
Short-term debt					0.0		58.0
Foreign Subsidiary
Short-term Debt [Line Items]
Maximum borrowing capacity under line of credit					287.4
Line of credit facility, remaining borrowing capacity					259.0
Short-term debt					27.9		61.8
Borrowings guarantees					0.5
Senior Unsecured Notes - Variable Rate
Short-term Debt [Line Items]
Maximum borrowing capacity under line of credit					$ 650.0
Line of credit expiration date					Jun. 25, 2024
Line of credit facility, remaining borrowing capacity					$ 640.8
Debt instrument, issuance date	Jun. 25, 2019
Fair value of amount outstanding					9.2		9.7
Fixed Rate Bank Loan (BEKA)
Short-term Debt [Line Items]
Fair value of amount outstanding					$ 16.8		18.8
Maturity date					Jun. 30, 2033
Term Loan - Variable Rate
Short-term Debt [Line Items]
Debt instrument, issuance date			Sep. 11, 2018
Fair value of amount outstanding					$ 323.2		$ 329.6
Maturity date			Sep. 11, 2023		Sep. 11, 2023
Proceeds from long-term debt			$ 350.0
Repurchase date					Jul. 12, 2019