Unaudited Condensed Consolidated Statements of Equity (Deficit) - USD ($) $ in Millions		Total	Share Capital		Share Capital Previously Reported	Share Capital Restatement Adjustment	Additional Paid in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2019			118,261,955	[1]	1,000,000	117,261,955
Beginning balance at Dec. 31, 2019	[1]	$ (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 income (loss)		(208.3)						(208.3)
Stock issuance (in shares)			123,900,000
Stock issuance		1,195.1					1,195.1
Merger recapitalization (in shares)	[2]		86,249,750
Merger recapitalization (2)	[2]	179.5					179.5
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
Ending balance at Mar. 31, 2020		$ 276.2	$ 0.0				1,519.6	(1,208.9)	(34.5)
Beginning balance (in shares) at Dec. 31, 2020		342,024,612	342,024,612
Beginning balance at Dec. 31, 2020		$ 512.1	$ 0.0				1,791.8	(1,331.2)	51.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		$ 31.7						31.7
Exercise of employee stock options (in shares)		76,047
Exercise of employee stock options		$ 0.9					0.9
Employee 401K match with Vertiv stock (in shares)		69,309
Employee 401K match with Vertiv stock		$ 1.3
Exercise of warrants (in shares)	[3]		9,346,822
Exercise of warrants (3)	[3]	176.0					176.0
Stock-based compensation		5.6					5.6
Other comprehensive loss, net of tax		$ 1.1							1.1
Ending balance (in shares) at Mar. 31, 2021		351,516,790	351,516,790
Ending balance at Mar. 31, 2021		$ 728.7	$ 0.0				$ 1,975.6	$ (1,299.5)	$ 52.6

[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).

[2] The merger recapitalization includes the fair value of $116.3 of Public Warrants and Private Placement Warrants as of February 7, 2020.

[3] The exercise of warrants includes $107.5 of cash received during the three months ended March 31, 2021 for the exercise of Public Warrants.