OTHER CURRENT ASSETS & OTHER CURRENT LIABILITIES - Other current liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Other Current Assets and Other Current Liabilities [Abstract]
Legal provisions	$ 118.9	$ 121.7
Warranty accruals and project contingencies	97.0	119.5
Social security liability	62.2	70.4
Value-added tax and other taxes payable	59.6	71.0
Compensation accrual	32.6	85.7
Provisions	12.6	23.6
Current portion of accrued pension and other post-retirement benefits	3.9	5.2
Other accrued liabilities	162.5	163.3
Total other current liabilities	$ 549.3	$ 660.4

Other Current Assets and Other Current Liabilities [Abstract]

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Provisions for Restructuring, Insurance, and Other

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Social security liability, current

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Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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