Segment Reporting - Reportable Segments Financial Data (Details) - USD ($) $ in Millions			12 Months Ended
	Aug. 31, 2021	Apr. 01, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fund level fee revenues
Investment income			$ 1,898.0	$ 6,721.9	$ 1,095.2
Interest income			135.9	90.7	89.6
Total revenues			4,438.7	8,782.1	2,934.6
Compensation and benefits
Cash-based compensation and benefits			1,052.0	908.0	849.6
Realized performance revenues related compensation			719.9	2,961.0	779.1
Total compensation and benefits			1,925.9	4,032.1	1,733.7
General, administrative and other expenses			575.8	431.7	349.3
Interest expense			110.4	113.3	94.0
Total expenses			2,824.7	4,757.1	2,333.3
Segment assets			21,403.0	21,250.4	15,644.8
Disposal group, not discontinued operation, gain (loss) on disposal, statement of income or comprehensive income		Other Nonoperating Income (Expense)
Brazilian management entity
Compensation and benefits
Equity interest sold (percent)	100.00%
Loss on the sale and related transaction costs	$ 4.7
Foreign currency translation loss	$ 14.7
MRE
Compensation and benefits
Equity interest sold (percent)		100.00%
Loss on the sale and related transaction costs		$ 5.0
Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues			2,237.3	1,794.8	1,616.1
Interest income			32.8	7.2	14.3
Total revenues			4,401.4	4,950.1	2,289.5
Compensation and benefits
Cash-based compensation and benefits			994.2	891.5	821.5
Total compensation and benefits			1,976.4	2,300.5	1,161.3
General, administrative and other expenses			369.8	267.6	241.4
Depreciation and amortization expense			38.9	37.6	33.5
Interest expense			107.3	100.7	91.2
Total expenses			2,492.4	2,706.4	1,527.4
Distributable Earnings			1,909.0	2,243.7	762.1
Realized principal investment income (loss)			150.6	209.5	73.0
Net interest			74.5	93.5	76.9
Fee Related Earnings			834.4	598.1	519.7
Segment assets			14,792.8	14,498.2
Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			1,399.8	1,146.1	1,064.8
Interest income			14.9	1.4	3.3
Total revenues			3,180.0	4,073.1	1,524.6
Compensation and benefits
Cash-based compensation and benefits			598.3	546.2	501.9
Total compensation and benefits			1,349.8	1,789.8	684.9
General, administrative and other expenses			235.3	172.5	157.9
Depreciation and amortization expense			25.6	25.1	22.0
Interest expense			63.7	63.8	55.3
Total expenses			1,674.4	2,051.2	920.1
Distributable Earnings			1,505.6	2,021.9	604.5
Realized principal investment income (loss)			108.7	167.8	52.0
Net interest			48.8	62.4	52.0
Fee Related Earnings			540.6	402.3	383.0
Segment assets			9,790.8	10,282.4
Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			614.6	419.8	358.2
Interest income			15.3	5.6	10.4
Total revenues			799.5	451.3	413.8
Compensation and benefits
Cash-based compensation and benefits			284.2	237.1	206.1
Total compensation and benefits			345.5	234.4	218.3
General, administrative and other expenses			97.7	63.1	45.7
Depreciation and amortization expense			8.2	8.0	7.0
Interest expense			32.6	26.1	26.6
Total expenses			484.0	331.6	297.6
Distributable Earnings			315.5	119.7	116.2
Realized principal investment income (loss)			38.1	31.9	18.7
Net interest			17.3	20.5	16.2
Fee Related Earnings			224.5	111.6	99.4
Segment assets			3,141.6	2,206.6
Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			222.9	228.9	193.1
Interest income			2.6	0.2	0.6
Total revenues			421.9	425.7	351.1
Compensation and benefits
Cash-based compensation and benefits			111.7	108.2	113.5
Total compensation and benefits			281.1	276.3	258.1
General, administrative and other expenses			36.8	32.0	37.8
Depreciation and amortization expense			5.1	4.5	4.5
Interest expense			11.0	10.8	9.3
Total expenses			334.0	323.6	309.7
Distributable Earnings			87.9	102.1	41.4
Realized principal investment income (loss)			3.8	9.8	2.3
Net interest			8.4	10.6	8.7
Fee Related Earnings			69.3	84.2	37.3
Segment assets			1,860.4	2,009.2
Fund management fees
Fund level fee revenues
Total fund level fee revenues			2,030.1	1,667.5	1,486.0
Fund management fees | Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues			1,996.9	1,654.6	1,523.3
Fund management fees | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			1,300.9	1,111.8	1,042.0
Fund management fees | Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			473.1	314.4	288.3
Fund management fees | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			222.9	228.4	193.0
Portfolio advisory and transaction fees, net and other | Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues			111.1	97.0	56.9
Portfolio advisory and transaction fees, net and other | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			29.5	34.3	22.8
Portfolio advisory and transaction fees, net and other | Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			81.6	62.2	34.0
Portfolio advisory and transaction fees, net and other | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			0.0	0.5	0.1
Fee related performance revenues | Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues			129.3	43.2	35.9
Fee related performance revenues | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			69.4	0.0	0.0
Fee related performance revenues | Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			59.9	43.2	35.9
Fee related performance revenues | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			0.0	0.0	0.0
Performance allocations
Fund level fee revenues
Investment income			1,327.5	6,084.6	1,635.9
Compensation and benefits
Realized performance revenues related compensation			719.9	2,961.0	779.1
Realized net performance revenues			607.6	3,123.6	856.8
Performance allocations | Total Reportable Segments
Fund level fee revenues
Investment income			1,980.7	2,938.6	586.1
Compensation and benefits
Realized performance revenues related compensation			982.2	1,409.0	339.8
Realized net performance revenues			998.5	1,529.6	246.3
Performance allocations | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Investment income			1,656.6	2,757.8	404.5
Compensation and benefits
Realized performance revenues related compensation			751.5	1,243.6	183.0
Realized net performance revenues			905.1	1,514.2	221.5
Performance allocations | Total Reportable Segments | Global Credit
Fund level fee revenues
Investment income			131.5	(6.0)	26.5
Compensation and benefits
Realized performance revenues related compensation			61.3	(2.7)	12.2
Realized net performance revenues			70.2	(3.3)	14.3
Performance allocations | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Investment income			192.6	186.8	155.1
Compensation and benefits
Realized performance revenues related compensation			169.4	168.1	144.6
Realized net performance revenues			23.2	18.7	10.5
Realized principal investment income
Fund level fee revenues
Investment income			570.5	637.3	(540.7)
Realized principal investment income | Total Reportable Segments
Fund level fee revenues
Investment income			150.6	209.5	73.0
Realized principal investment income | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Investment income			108.7	167.8	52.0
Realized principal investment income | Total Reportable Segments | Global Credit
Fund level fee revenues
Investment income			38.1	31.9	18.7
Realized principal investment income | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Investment income			$ 3.8	$ 9.8	$ 2.3