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Fair Value Measurements (Details Textuals) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Derivative Assets $ 23,300,000us-gaap_DerivativeAssets $ 2,200,000us-gaap_DerivativeAssets
Derivative Liabilities 7,400,000us-gaap_DerivativeLiabilities 5,600,000us-gaap_DerivativeLiabilities
Cash Equivalents 12,200,000us-gaap_CashEquivalentsAtCarryingValue 14,200,000us-gaap_CashEquivalentsAtCarryingValue
Change in Carrying Value Verse Fair Value of Long Term Debt 14,200,000mtd_ChangeinCarryingValueVerseFairValueofLongTermDebt 17,800,000mtd_ChangeinCarryingValueVerseFairValueofLongTermDebt
Fair Value, Measurements, Recurring [Member]    
Cash Equivalents $ 12,167,000us-gaap_CashEquivalentsAtCarryingValue
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
$ 14,188,000us-gaap_CashEquivalentsAtCarryingValue
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember