Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Units	Common Stock	Partners’ Capital	Additional Paid-in-Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interests in Consolidated Entities	Non- controlling Interests in Carlyle Holdings
Beginning balance (in shares) at Dec. 31, 2019			0
Beginning balance at Dec. 31, 2019	$ 2,969.6		$ 0.0		$ 0.0	$ 0.0	$ (85.2)	$ 333.5	$ 2,017.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification resulting from Conversion - Partners' Capital (in shares)			117,800,000
Reclassification resulting from Conversion - Partners' Capital			$ 1.2		702.6
Reclassification resulting from Conversion - Non-controlling Interest in Carlyle Holdings (in shares)			229,400,000
Reclassification resulting from Conversion - Non-controlling Interest in Carlyle Holdings			$ 2.3		2,015.2				(2,017.5)
Shares repurchased (in shares)			(1,100,000)
Shares/units repurchased	(26.4)				(26.4)
Tax effects resulting from Conversion	(53.6)				(64.4)		10.8
Equity-based compensation	29.4				29.4
Shares issued for equity-based awards (in shares)			2,300,000
Contributions	4.2							4.2
Distributions	(111.7)				(87.4)			(24.3)
Net income (loss)	(709.0)					(612.0)		(97.0)
Currency translation adjustments	(22.9)						(10.2)	(12.7)
Unrealized losses on Fortitude Re available-for-sale securities	(7.7)						(7.7)
Defined benefit plans, net	(2.8)						(2.8)
Ending balance (in shares) at Mar. 31, 2020			348,400,000
Ending balance at Mar. 31, 2020	$ 2,069.1		$ 3.5		2,569.0	(612.0)	(95.1)	203.7	$ 0.0
Beginning balance (in units) at Dec. 31, 2019		117,800,000
Beginning balance at Dec. 31, 2019				$ 703.8
Increase (Decrease) in Partners' Capital [Roll Forward]
Reclassification resulting from Conversion - Partners' Capital (in shares)		(117,800,000)
Reclassification resulting from Conversion - Partners' Capital				(703.8)
Ending balance (in units) at Mar. 31, 2020		0
Ending balance at Mar. 31, 2020				$ 0.0
Beginning balance (in shares) at Dec. 31, 2020	353,520,576		353,500,000
Beginning balance at Dec. 31, 2020	$ 2,930.2		$ 3.5		2,546.2	348.2	(208.7)	241.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased (in shares)	(300,000)		(300,000)
Shares/units repurchased	$ (10.0)					(10.0)
Equity-based compensation	27.5				27.5
Shares issued for equity-based awards (in shares)			1,300,000
Contributions	3.7							3.7
Distributions	(104.0)					(88.7)		(15.3)
Net income (loss)	890.9					869.3		21.6
Currency translation adjustments	(27.9)						(27.1)	(0.8)
Unrealized losses on Fortitude Re available-for-sale securities	0.0
Defined benefit plans, net	$ 1.8						1.8
Ending balance (in shares) at Mar. 31, 2021	354,528,701		354,500,000
Ending balance at Mar. 31, 2021	$ 3,712.2		$ 3.5		$ 2,573.7	$ 1,118.8	$ (234.0)	$ 250.2