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Equity Incentive Plan Details 1 (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award
Options, Outstanding, Number	1,646,483us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1,871,694us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Options, Outstanding, Weighted Average Exercise Price	$ 133.80us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	$ 112.57us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Options, Outstanding, Weighted Average Remaining Contractual Term	5 years 7 months 6 days
Options, Exercisable, Number	1,221,408us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
$0.0-$50.0 Range of Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award
Options, Outstanding, Number	131,950us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A00400RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Exercise Price	$ 64.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A00400RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 10 months 24 days
Options, Exercisable, Number	131,950us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A00400RangeOfExercisePriceMember
$50.0-$70.0 Range of Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award
Options, Outstanding, Number	455,423us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A400530RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Exercise Price	$ 81.47us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A400530RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Remaining Contractual Term	4 years 3 months 18 days
Options, Exercisable, Number	455,423us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A400530RangeOfExercisePriceMember
$70.0-$100.0 Range of Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award
Options, Outstanding, Number	277,550us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A530740RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Exercise Price	$ 108.64us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A530740RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Remaining Contractual Term	2 years 10 months 24 days
Options, Exercisable, Number	277,550us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A530740RangeOfExercisePriceMember
$100.0-$125.0 Range of Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award
Options, Outstanding, Number	348,555us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A7401130RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Exercise Price	$ 141.45us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A7401130RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Remaining Contractual Term	6 years 3 months 18 days
Options, Exercisable, Number	249,485us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A7401130RangeOfExercisePriceMember
$125.0-$150.0 Range of Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award
Options, Outstanding, Number	433,005us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A11301370RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Exercise Price	$ 219.79us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A11301370RangeOfExercisePriceMember
Options, Outstanding, Weighted Average Remaining Contractual Term	8 years 8 months 12 days
Options, Exercisable, Number	107,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = mtd_A11301370RangeOfExercisePriceMember

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901



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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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