XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.21.2

Derivative Instruments and Hedges (Textual) (Details) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2021 EUR (€) | Dec. 31, 2020 USD ($) | Sep. 22, 2020 EUR (€) | Mar. 31, 2015 EUR (€)
2022 EUR Senior Notes |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Stated interest rate (as a percent) | 1.25% | 1.25% | 1.25% | 1.25% |  |
2022 EUR Senior Notes |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Designated amount, net investment hedge | € |  |  |  |  | € 336,300,000 | € 255,700,000
Currency Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, notional amount | € |  |  | € 423,200,000 |  |  |
Derivative, Interest Payable | $ | $ (2.3) | $ (5.0) |  |  |  |
Not Designated as Hedging Instrument | Forward Exchange Contract |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, notional amount | $ | $ 361.3 | $ 361.3 |  | $ 388.1 |  |
Minimum remaining maturity of foreign currency derivatives |  | 20 days |  |  |  |
Maximum remaining maturity of foreign currency derivatives |  | 24 months |  |  |  |

X
- Definition Derivative, Interest Payable + References No definition available. + Details
Name: | fls_DerivativeInterestPayable
Namespace Prefix: | fls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Designated Amount, Net Investment Hedge + References No definition available. + Details
Name: | fls_DesignatedAmountNetInvestmentHedge
Namespace Prefix: | fls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum Remaining Maturity of Foreign Currency Derivatives + References No definition available. + Details
Name: | fls_MinimumRemainingMaturityofForeignCurrencyDerivatives
Namespace Prefix: | fls_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_MaximumRemainingMaturityOfForeignCurrencyDerivatives1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fls_A2022EURSeniornotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=fls_A2022EURSeniornotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CurrencySwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |