STOCKHOLDERS' EQUITY - Capital Stock Information (Details) - USD ($)		3 Months Ended													12 Months Ended
	May 31, 2021	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2018
Common stock, shares issued (in shares)			84,600,000				84,000,000.0								84,600,000	84,000,000.0
Common Stock, unissued shares (in shares)			215,400,000												215,400,000
Value of treasury stock on an average cost basis (in dollars)			$ 622,400,000				$ 560,300,000								$ 622,400,000	$ 560,300,000
Preferred stock, shares authorized (in shares)			50,000,000												50,000,000
Preferred stock, par value per share (in dollars per share)			$ 0.01												$ 0.01
Preferred stock, shares outstanding (in shares)			0				0								0	0
Tax benefit related to stock-based compensation arrangements (in dollars)															$ 5,500,000	$ 4,500,000	$ 5,100,000
Common stock authorized to repurchase							$ 150,000,000									$ 150,000,000			$ 300,000,000
Common stock dividends declared (in dollars per share)			$ 0.17	$ 0.17	$ 0.15	$ 0.15	$ 0.13	$ 0.13	$ 0.13	$ 0.13	$ 0.12	$ 0.12	$ 0.12	$ 0.12
Treasury stock (in shares)			18,500,000				17,200,000								18,500,000	17,200,000
Subsequent Event
Common stock dividends declared (in dollars per share)		$ 0.17
Common Stock
Common stock, shares outstanding (in shares)			66,100,000				66,800,000				69,200,000				66,100,000	66,800,000	69,200,000	68,600,000
Cumulative Translation Adjustment
Tax benefit (provition) included in accumulated other comprehensive income			$ 7,000,000												$ 7,000,000
Derivative Hedging Adjustment
Tax benefit (provition) included in accumulated other comprehensive income			1,300,000												1,300,000
Debt & Equity Securities Adjustment
Tax benefit (provition) included in accumulated other comprehensive income			700,000												700,000
Pension Liability Adjustment
Tax benefit (provition) included in accumulated other comprehensive income			$ 2,400,000												$ 2,400,000
Stock Options and Restricted Stock
Common Stock reserved for contingently issuable shares (in shares)			1,600,000												1,600,000
Restricted Stock, Time-Based
Percentage of awards vesting															64.00%
Performance Shares
Percentage of awards vesting															24.00%
Market Condition Award
Percentage of awards vesting															12.00%
Restricted Stock Awards
Unrecognized compensation costs (in dollars)			$ 39,900,000												$ 39,900,000
Weighted average period of unrecognized compensation costs will be recognized (in years)															1 year 8 months 12 days
Total fair value of shares vested (in dollars)															$ 31,000,000	$ 31,200,000	$ 23,000,000
Granted (in dollars per shares)															$ 57.53	$ 40.16	$ 44.26
All Company Stock Plans
Number of common shares held in rabbi trust (in shares)			800,000												800,000
Value of common shares held in rabbi trust (in dollars)			$ 22,100,000												$ 22,100,000
Terex Corporation 2018 Omnibus Incentive Plan
Additional shares authorized (in shares)	2,000,000
Shares available for grant (in shares)			2,400,000												2,400,000