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Borrowings and Lines of Credit - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 04, 2016
Debt Instrument [Line Items]
Document Fiscal Year Focus	2021
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	$ 0.0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0.0
Long-term Debt, Maturities, Repayments of Principal in Year Three	70.0
Long-term borrowings [Abstract]
Long-term debt	70.0	$ 165.1
Less: current maturities	0.0	165.1
Long-term debt (noncurrent)	70.0	0.0
Convertible Debt | Convertible Notes Due Twenty Twenty One [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Four	0.0
Long-term borrowings [Abstract]
Convertible Debt	0.0	165.1
Debt instrument, face amount		172.5		$ 172.5
Debt Instrument, Interest Rate, Stated Percentage				3.25%
Debt Instrument, Fair Value Disclosure		196.5
Debt instrument, convertible, carrying amount of equity component				$ 29.9
Line of Credit | Credit Facility Due October 11, 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Five	0.0
Long-term borrowings [Abstract]
Long-term Line of Credit	$ 70.0
Line of Credit | Term Loan and Revolving Credit Facility Due January 2019 [Member]
Long-term borrowings [Abstract]
Long-term Line of Credit		$ 0.0
London Interbank Offered Rate (LIBOR) [Member] | Credit Facilities [Member]
Long-term borrowings [Abstract]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	2.25%	2.20%	3.98%
Weighted Average [Member] | Credit Facilities [Member]
Long-term borrowings [Abstract]
Line of Credit Facility, Commitment Fee Percentage	0.26%	0.26%	0.23%

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This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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