Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 890.9	$ (709.0)
Other comprehensive income (loss)
Foreign currency translation adjustments	(27.9)	(22.9)
Unrealized losses on Fortitude Re available-for-sale securities	0.0	(7.7)
Defined benefit plans
Unrealized gain (loss) for the period	1.3	(3.2)
Less: reclassification adjustment for gain during the period, included in cash-based compensation and benefits expense	0.5	0.4
Other comprehensive loss	(26.1)	(33.4)
Comprehensive income (loss)	864.8	(742.4)
Comprehensive income (loss) attributable to non-controlling interests in consolidated entities	20.8	(109.7)
Comprehensive income (loss) attributable to The Carlyle Group Inc.	$ 844.0	$ (632.7)