Unaudited Condensed Consolidated Statements of Equity (Deficit) - USD ($) $ in Millions		Total	Share Capital		Share Capital Previously Reported	Additional Paid in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2018			118,261,955	[1]	1,000,000.0
Beginning balance at Dec. 31, 2018		$ (540.3)	$ 0.0			$ 277.7	$ (859.8)	$ 41.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(74.3)					(74.3)
Other comprehensive loss, net of tax		6.7						6.7
Ending balance (in shares) at Mar. 31, 2019	[1]		118,261,955
Ending balance at Mar. 31, 2019		$ (607.9)	$ 0.0			277.7	(934.1)	48.5
Beginning balance (in shares) at Dec. 31, 2019		118,261,955	118,261,955	[1]	1,000,000
Beginning balance at Dec. 31, 2019		$ (704.8)	$ 0.0			277.7	(1,000.6)	18.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Tax Receivable Agreement		(133.4)				(133.4)
Net loss		(268.9)					(268.9)
Stock issuance (in shares)			123,900,000
Stock issuance		1,195.1				1,195.1
Merger recapitalization (in shares)			86,249,750
Merger recapitalization		295.8				295.8
Stock-based Compensation		0.7				0.7
Other comprehensive loss, net of tax		$ (52.6)						(52.6)
Ending balance (in shares) at Mar. 31, 2020		328,411,705	328,411,705
Ending balance at Mar. 31, 2020		$ 331.9	$ 0.0			$ 1,635.9	$ (1,269.5)	$ (34.5)

[1] The shares and earnings per share available to holders of the Company’s ordinary shares, prior to the Business Combination, have been recasted as shares reflecting the exchange ratio established in the Business Combination (1.0 Vertiv Holdings share to 118.261955 Vertiv Holdings Co shares).