Unaudited Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Ordinary Class A Common Stock	Ordinary Class B Common Stock	Common Class A	Common Class A Common Stock	Common Class C	Common Class C Common Stock	Shares subject to a $15.00 earn-out	Shares subject to a $15.00 earn-out Additional Paid-In Capital	Shares subject to a $15.00 earn-out Common Class A	Shares subject to a $15.00 earn-out Common Class A Common Stock	Shares subject to a $15.00 earn-out Common Class C	Shares subject to a $12.50 earn-out	Shares subject to a $12.50 earn-out Additional Paid-In Capital	Shares subject to a $12.50 earn-out Common Class A	Shares subject to a $12.50 earn-out Common Class A Common Stock	Shares subject to a $12.50 earn-out Common Class C	Shares subject to a $12.50 earn-out Common Class C Common Stock	Shares subject to a $12.25 earn-out	Shares subject to a $12.25 earn-out Additional Paid-In Capital	Shares subject to a $12.25 earn-out Common Class A	Shares subject to a $12.25 earn-out Common Class A Common Stock	Shares subject to a $12.25 earn-out Common Class C
Beginning Balance (shares) at Dec. 31, 2017		995
Beginning Balance at Dec. 31, 2017	$ 212.3	$ 0.0	$ 291.4	$ (61.3)	$ (1.5)	$ (16.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	4.5					4.5
Net loss	(6.8)			(6.8)
Ending Balance (shares) at Mar. 31, 2018		995
Ending Balance at Mar. 31, 2018	210.0	$ 0.0	291.4	(68.1)	(1.5)	(11.8)
Beginning Balance (shares) at Dec. 31, 2017		995
Beginning Balance at Dec. 31, 2017	212.3	$ 0.0	291.4	(61.3)	(1.5)	(16.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4.6)
Ending Balance (shares) at Sep. 30, 2018		995
Ending Balance at Sep. 30, 2018	202.3	$ 0.0	291.4	(65.9)	(1.5)	(21.7)
Beginning Balance (shares) at Mar. 31, 2018		995
Beginning Balance at Mar. 31, 2018	210.0	$ 0.0	291.4	(68.1)	(1.5)	(11.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	(8.8)					(8.8)
Net loss	1.9
Ending Balance (shares) at Jun. 30, 2018		995
Ending Balance at Jun. 30, 2018	203.1	$ 0.0	291.4	(66.2)	(1.5)	(20.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	(1.1)					(1.1)
Net loss	0.3
Ending Balance (shares) at Sep. 30, 2018		995
Ending Balance at Sep. 30, 2018	$ 202.3	$ 0.0	291.4	(65.9)	(1.5)	(21.7)
Beginning Balance (shares) at Dec. 31, 2018	995	995											0					0						0
Beginning Balance at Dec. 31, 2018	$ 196.4	$ 0.0	291.4	(69.9)	(1.5)	(23.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	(3.4)					(3.4)
Net loss	(3.2)			(3.2)
Ending Balance (shares) at Mar. 31, 2019		995
Ending Balance at Mar. 31, 2019	$ 189.8	$ 0.0	291.4	(73.1)	(1.5)	(27.0)
Beginning Balance (shares) at Dec. 31, 2018	995	995											0					0						0
Beginning Balance at Dec. 31, 2018	$ 196.4	$ 0.0	291.4	(69.9)	(1.5)	(23.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(19.0)
Ending Balance (shares) at Jun. 02, 2019		0
Ending Balance at Jun. 02, 2019	0.0	$ 0.0	0.0	0.0	0.0	0.0
Beginning Balance (shares) at Mar. 31, 2019		995
Beginning Balance at Mar. 31, 2019	189.8	$ 0.0	291.4	(73.1)	(1.5)	(27.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	74.1					74.1
Net loss	(15.8)
Purchase of Ranpak Corp. (shares)		(995)
Purchase of Ranpak Corp.	(248.1)		(291.4)	88.9	1.5	(47.1)
Ending Balance (shares) at Jun. 02, 2019		0
Ending Balance at Jun. 02, 2019	0.0	$ 0.0	0.0	0.0	$ 0.0	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (12.0)
Ending Balance (shares) at Sep. 30, 2019	53,872,645						0	0	47,361,352	47,361,352	6,511,293	6,511,293	2,940,336		2,940,336		0	3,750,000		3,018,617		731,383		157,500		157,500		0
Ending Balance at Sep. 30, 2019	$ 399.6		429.8	(23.9)		(6.3)	$ 0.0	$ 0.0		$ 0.0		$ 0.0
Beginning Balance (shares) at Jun. 03, 2019							2,770,967	11,250,000		0		0
Beginning Balance at Jun. 03, 2019	5.0		16.9	(11.9)		0.0	$ 0.0	$ 0.0		$ 0.0		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Forward Purchase Shares (shares)							15,000,000
Forward Purchase Shares	0.0						$ 0.0
Additional Shares Purchased (shares)							16,149,317
Additional Shares Purchased	0.0						$ 0.0
Conversion of Forward Purchase & Additional Shares (shares)							(31,149,317)			25,454,282		5,695,035
Conversion of Forward Purchase & Additional Shares	256.0		256.0				$ 0.0			$ 0.0		$ 0.0
Shares Canceled (shares)								(3,854,664)
Shares Canceled	(31.7)		(31.7)					$ 0.0
Convert Class B (shares)								(7,395,336)		547,500		0
Convert Class B	4.5		4.5					$ 0.0		$ 0.0		$ 0.0
Convert Public Shares (shares)										14,581,346
Convert Public Shares	119.9		119.9							$ 0.0
Convert Private Placement Warrants (shares)										658,051		84,875
Convert Private Placement Warrants	6.1		6.1							$ 0.0		$ 0.0
Shares subject to earnout (shares)																2,940,336					3,018,617		731,383				157,500
Shares subject to earnout													$ 24.2	$ 24.2		$ 0.0		$ 30.8	$ 30.8		$ 0.0		$ 0.0	$ 1.3	$ 1.3		$ 0.0
Public Shares Redeemed (shares)							(2,770,967)
Public Shares Redeemed	0.0						$ 0.0
Issue restricted stock units	0.2		0.2
Foreign currency translation	4.8					4.8
Net loss	$ (10.4)			(10.4)
Ending Balance (shares) at Sep. 30, 2019	53,872,645						0	0	47,361,352	47,361,352	6,511,293	6,511,293	2,940,336		2,940,336		0	3,750,000		3,018,617		731,383		157,500		157,500		0
Ending Balance at Sep. 30, 2019	$ 399.6		429.8	(23.9)		(6.3)	$ 0.0	$ 0.0		$ 0.0		$ 0.0
Beginning Balance (shares) at Jun. 30, 2019							0	0		47,357,632		6,511,293
Beginning Balance at Jun. 30, 2019	410.7		428.2	(22.3)		4.8	$ 0.0	$ 0.0		$ 0.0		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue restricted stock units	1.6		1.6
Issue Director Shares (shares)										3,720
Foreign currency translation	(11.1)					(11.1)
Net loss	$ (1.6)			(1.6)
Ending Balance (shares) at Sep. 30, 2019	53,872,645						0	0	47,361,352	47,361,352	6,511,293	6,511,293	2,940,336		2,940,336		0	3,750,000		3,018,617		731,383		157,500		157,500		0
Ending Balance at Sep. 30, 2019	$ 399.6		$ 429.8	$ (23.9)		$ (6.3)	$ 0.0	$ 0.0		$ 0.0		$ 0.0