The number of shares of equity awards other than options that have a market condition.

No definition available.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Percentage of vesting of award under share-based payment arrangement.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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STOCKHOLDERS' EQUITY - Share Based Comp (Details) - USD ($)				12 Months Ended
	Feb. 26, 2020	Mar. 12, 2019	Mar. 08, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Feb. 07, 2018
Share-based compensation arrangements
Acquisition of Treasury Stock				$ 56,100,000	$ 7,700,000	$ 427,800,000
Weighted Average Grant Date Fair Value
Tax benefit related to stock-based compensation arrangements (in dollars)				$ 3,500,000	7,300,000	4,600,000
Common stock authorized to repurchase							$ 625
Restricted Stock, Time-Based
Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Percentage Of Awards				50.00%
Performance Shares
Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Percentage Of Awards				34.00%
Restricted Stock Awards
Assumptions used in valuation
Unrecognized compensation costs (in dollars)				$ 32,000,000
Weighted average period of unrecognized compensation costs will be recognized (in years)				1 year 7 months 6 days
Total fair value of shares vested (in dollars)				$ 37,200,000	$ 44,100,000	$ 34,900,000
Restricted Stock Awards
Nonvested at the beginning of the period (in shares)				2,442,260
Granted (in shares)				1,367,067
Vested (in shares)				(1,103,352)
Canceled or expired (in shares)				(314,650)
Nonvested at the end of the period (in shares)				2,391,325	2,442,260
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per shares)				$ 35.53
Granted (in dollars per shares)				22.42	$ 33.84	$ 40.06
Vested (in dollars per shares)				33.73
Cancelled or expired (in dollars per shares)				28.88
Nonvested at the end of the period (in dollars per shares)				$ 27.64	$ 35.53
Market Condition Award
Share-based compensation arrangements
Number of shares of restricted stock with fair value based on market condition, instead of market price (in shares)				400,000
Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Percentage Of Awards				16.00%
Terex Corporation 2009 Omnibus Incentive Plan (the 2009 Plan) \| Maximum
Share-based compensation arrangements
Shares authorized for issuance (in shares)				8,000,000.0
Terex Corporation 2018 Omnibus Incentive Plan
Share-based compensation arrangements
Shares available for grant (in shares)				1,300,000
Terex Corporation 2018 Omnibus Incentive Plan \| Maximum
Share-based compensation arrangements
Shares authorized for issuance (in shares)				1,200,000
Grant Date, March 12, 2019 \| Market Condition Award
Assumptions used in valuation
Dividend yields (as a percent)		1.31%
Expected volatility (as a percent)		36.64%
Risk-free interest rate (as a percent)		2.40%
Expected life (in years)		3 years
Weighted Average Grant Date Fair Value
Granted (in dollars per shares)		$ 38.77
Grant Date, March 8, 2018 \| Market Condition Award
Assumptions used in valuation
Dividend yields (as a percent)			1.00%
Expected volatility (as a percent)			40.41%
Risk-free interest rate (as a percent)			2.38%
Expected life (in years)			3 years
Weighted Average Grant Date Fair Value
Granted (in dollars per shares)			$ 41.57
Grant Date, February 26, 2020 \| Market Condition Award
Assumptions used in valuation
Dividend yields (as a percent)	2.12%
Expected volatility (as a percent)	36.36%
Risk-free interest rate (as a percent)	1.14%
Expected life (in years)	3 years
Weighted Average Grant Date Fair Value
Granted (in dollars per shares)	$ 21.09
Share repurchase program approved by Board of Directors
Share-based compensation arrangements
Acquisition of Treasury Stock				$ 54,600,000	$ 4,900,000	$ 425,000,000.0
Acquisition of Treasury Stock (in shares)				2,500,000	200,000	11,400,000