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Debt (Details) € in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 EUR (€) | Dec. 31, 2019 EUR (€)
Debt Instrument [Line Items] |  |  |  |
Long-term Line of Credit, Noncurrent, Net of Debt Issuance Costs | $ (8.7) | $ 512.7 |  |
Line of Credit Facility [Line Items] |  |  |  |
Long-term debt, net of debt issuance costs | 702.0 | 664.6 |  |
Line of Credit Facility, Maximum Borrowing Capacity | 64.7 |  |  |
Letters of Credit Outstanding, Amount | 0.7 | 0.8 |  |
Short-term borrowings | 62.0 | 120.1 |  |
Agreement expires August 31, 2020 [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 900.0 | 100.0 |  |
Line of Credit, Current | $ 195.9 | 11.4 |  |
Pricing on the Facility based on market rates | LIBOR plus 1.40% |  |  |
Agreement expires September 19, 2020, Extension [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 1,600.0 | 775.0 |  |
Line of Credit, Current | $ 768.9 | 184.8 |  |
Pricing on the Facility based on market rates | LIBOR plus 1.40% |  |  |
Long-term senior notes, 4.4%, due November 2022 [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Long-term debt, net of debt issuance costs | $ 274.2 | 273.8 |  |
Debt Instrument, Face Amount | $ 275.0 | $ 275.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.40% | 4.40% | 4.40% | 4.40%
Unamortized Debt Issuance Expense | $ 0.8 | $ 1.2 |  |
Long-term senior notes, Euro notes, 1.96%, due June 2027 [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Long-term debt, net of debt issuance costs | $ 213.9 | $ 195.4 |  |
Debt Instrument, Face Amount | € |  |  | € 175.0 | € 175.0
Debt Instrument, Interest Rate, Stated Percentage | 1.96% | 1.96% | 1.96% | 1.96%
Unamortized Debt Issuance Expense | $ 0.8 | $ 0.9 |  |
Long-term senior notes, Euro notes, 2.21%, due June 2029 [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Long-term debt, net of debt issuance costs | $ 213.9 | $ 195.4 |  |
Debt Instrument, Face Amount | € |  |  | € 175.0 | € 175.0
Debt Instrument, Interest Rate, Stated Percentage | 2.21% | 2.21% | 2.21% | 2.21%
Unamortized Debt Issuance Expense | $ 0.9 | $ 1.0 |  |
Long-Term Senior Notes [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Unamortized Debt Issuance Expense | 2.5 | 3.1 |  |
Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Line of Credit, Noncurrent, Net of Debt Issuance Costs | (8.7) | 512.7 |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 2,750.0 |  |  |
Pricing on the Facility based on market rates | LIBOR plus 0.875% to 1.35% |  |  |
Description of variable rate basis | LIBOR |  |  |
Basis spread on variable rate | 0.95% |  |  |
Line of Credit Facility, Average Outstanding Amount | $ 865.1 | $ 851.6 |  |
Line of Credit Facility, Interest Rate During Period | 1.60% | 3.00% |  |
Unamortized Debt Issuance Expense | $ 8.7 | $ 12.3 |  |

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- Definition Long-term Line of Credit, Noncurrent, Net of Debt Issuance Costs + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current portion 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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