Segment Reporting - Reportable Segments Financial Data (Details) - USD ($) $ in Millions			12 Months Ended
	Aug. 31, 2021	Apr. 01, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fund level fee revenues
Investment income			$ 44.8	$ 1,898.0	$ 6,721.9
Interest income			212.1	135.9	90.7
Total revenues			2,963.9	4,438.7	8,782.1
Compensation and benefits
Cash-based compensation and benefits			1,023.7	1,052.0	908.0
Realized performance revenues related compensation			1,103.7	719.9	2,961.0
Total compensation and benefits			2,376.5	1,925.9	4,032.1
General, administrative and other expenses			652.1	575.8	431.7
Interest expense			123.8	110.4	113.3
Total expenses			3,571.7	2,824.7	4,757.1
Segment assets			21,176.0	21,403.0	21,250.4
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
Interest income					7.2
Total revenues			3,405.1	4,401.4	4,950.1
Compensation and benefits
Cash-based compensation and benefits					891.5
Total compensation and benefits					2,300.5
General, administrative and other expenses					267.6
Depreciation and amortization expense					37.6
Interest expense					100.7
Total expenses			1,974.6	2,492.4	2,706.4
Distributable Earnings					2,243.7
Realized principal investment income					209.5
Net interest					93.5
Fee Related Earnings					598.1
Segment assets			13,898.1	14,792.8	14,498.2
Total Reportable Segments | Global Segments
Fund level fee revenues
Total fund level fee revenues			2,305.8	2,237.3	1,794.8
Interest income			72.2	32.8
Total revenues			3,405.1	4,401.4
Compensation and benefits
Cash-based compensation and benefits			1,031.9	994.2
Total compensation and benefits			1,439.2	1,976.4
General, administrative and other expenses			376.5	369.8
Depreciation and amortization expense			38.0	38.9
Interest expense			120.9	107.3
Total expenses			1,974.6	2,492.4
Distributable Earnings			1,430.5	1,909.0
Realized principal investment income			88.8	150.6
Net interest			48.7	74.5
Fee Related Earnings			859.4	834.4
Segment assets			13,898.1	14,792.8
Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			1,396.5	1,399.8	1,146.1
Interest income			31.6	14.9	1.4
Total revenues			2,278.5	3,180.0	4,073.1
Compensation and benefits
Cash-based compensation and benefits			583.8	598.3	546.2
Total compensation and benefits			891.9	1,349.8	1,789.8
General, administrative and other expenses			221.9	235.3	172.5
Depreciation and amortization expense			26.0	25.6	25.1
Interest expense			66.9	63.7	63.8
Total expenses			1,206.7	1,674.4	2,051.2
Distributable Earnings			1,071.8	1,505.6	2,021.9
Realized principal investment income			45.3	108.7	167.8
Net interest			35.3	48.8	62.4
Fee Related Earnings			564.8	540.6	402.3
Segment assets			8,442.5	9,790.8
Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			663.3	614.6	419.8
Interest income			34.7	15.3	5.6
Total revenues			778.6	799.5	451.3
Compensation and benefits
Cash-based compensation and benefits			324.5	284.2	237.1
Total compensation and benefits			344.8	345.5	234.4
General, administrative and other expenses			106.8	97.7	63.1
Depreciation and amortization expense			7.6	8.2	8.0
Interest expense			45.0	32.6	26.1
Total expenses			504.2	484.0	331.6
Distributable Earnings			274.4	315.5	119.7
Realized principal investment income			37.1	38.1	31.9
Net interest			10.3	17.3	20.5
Fee Related Earnings			224.4	224.5	111.6
Segment assets			3,282.8	3,141.6
Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			246.0	222.9	228.9
Interest income			5.9	2.6	0.2
Total revenues			348.0	421.9	425.7
Compensation and benefits
Cash-based compensation and benefits			123.6	111.7	108.2
Total compensation and benefits			202.5	281.1	276.3
General, administrative and other expenses			47.8	36.8	32.0
Depreciation and amortization expense			4.4	5.1	4.5
Interest expense			9.0	11.0	10.8
Total expenses			263.7	334.0	323.6
Distributable Earnings			84.3	87.9	102.1
Realized principal investment income			6.4	3.8	9.8
Net interest			3.1	8.4	10.6
Fee Related Earnings			70.2	69.3	84.2
Segment assets			2,172.8	1,860.4
Fund management fees
Fund level fee revenues
Total fund level fee revenues			2,043.2	2,030.1	1,667.5
Fund management fees | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			2,043.2	2,030.1	1,667.5
Fund management fees | Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues					1,654.6
Fund management fees | Total Reportable Segments | Global Segments
Fund level fee revenues
Total fund level fee revenues			2,064.4	1,996.9
Fund management fees | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			1,309.8	1,300.9	1,111.8
Fund management fees | Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			512.2	473.1	314.4
Fund management fees | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			242.4	222.9	228.4
Portfolio advisory and transaction fees, net and other | Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues					97.0
Portfolio advisory and transaction fees, net and other | Total Reportable Segments | Global Segments
Fund level fee revenues
Total fund level fee revenues			80.4	111.1
Portfolio advisory and transaction fees, net and other | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			18.4	29.5	34.3
Portfolio advisory and transaction fees, net and other | Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			62.0	81.6	62.2
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	0.0	0.5
Fee related performance revenues | Total Reportable Segments
Fund level fee revenues
Total fund level fee revenues					43.2
Fee related performance revenues | Total Reportable Segments | Global Segments
Fund level fee revenues
Total fund level fee revenues			161.0	129.3
Fee related performance revenues | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Total fund level fee revenues			68.3	69.4	0.0
Fee related performance revenues | Total Reportable Segments | Global Credit
Fund level fee revenues
Total fund level fee revenues			89.1	59.9	43.2
Fee related performance revenues | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Total fund level fee revenues			3.6	0.0	0.0
Performance allocations
Fund level fee revenues
Investment income			(88.6)	1,327.5	6,084.6
Compensation and benefits
Realized performance revenues related compensation			1,103.7	719.9	2,961.0
Realized net performance revenues			(1,192.3)	607.6	3,123.6
Performance allocations | Total Reportable Segments
Fund level fee revenues
Investment income					2,938.6
Compensation and benefits
Realized performance revenues related compensation					1,409.0
Realized net performance revenues					1,529.6
Performance allocations | Total Reportable Segments | Global Segments
Fund level fee revenues
Investment income			938.3	1,980.7
Compensation and benefits
Realized performance revenues related compensation			407.3	982.2
Realized net performance revenues			531.0	998.5
Performance allocations | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Investment income			805.1	1,656.6	2,757.8
Compensation and benefits
Realized performance revenues related compensation			308.1	751.5	1,243.6
Realized net performance revenues			497.0	905.1	1,514.2
Performance allocations | Total Reportable Segments | Global Credit
Fund level fee revenues
Investment income			43.5	131.5	(6.0)
Compensation and benefits
Realized performance revenues related compensation			20.3	61.3	(2.7)
Realized net performance revenues			23.2	70.2	(3.3)
Performance allocations | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Investment income			89.7	192.6	186.8
Compensation and benefits
Realized performance revenues related compensation			78.9	169.4	168.1
Realized net performance revenues			10.8	23.2	18.7
Realized principal investment income
Fund level fee revenues
Investment income			133.4	570.5	637.3
Realized principal investment income | Total Reportable Segments
Fund level fee revenues
Investment income					209.5
Realized principal investment income | Total Reportable Segments | Global Segments
Fund level fee revenues
Investment income			88.8	150.6
Realized principal investment income | Total Reportable Segments | Global Private Equity
Fund level fee revenues
Investment income			45.3	108.7	167.8
Realized principal investment income | Total Reportable Segments | Global Credit
Fund level fee revenues
Investment income			37.1	38.1	31.9
Realized principal investment income | Total Reportable Segments | Global Investment Solutions
Fund level fee revenues
Investment income			$ 6.4	$ 3.8	$ 9.8