v3.3.0.814
Financial Data of Segments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Segment Reporting Information [Line Items]          
Total Management and Advisory Fees, Net $ 703,596 $ 640,949 $ 1,894,496 $ 1,833,632  
Performance Fees Realized - Carried Interest 435,189 638,676 2,580,266 1,613,958  
Performance Fees Realized - Incentive Fees 33,455 35,445 110,775 118,743  
Performance Fees Unrealized - Carried Interest (1,055,920) 222,105 (1,124,010) 1,213,181  
Performance Fees Unrealized - Incentive Fees (50,832) (6,163) 36,274 112,709  
Total Performance Fees (638,108) 890,063 1,603,305 3,058,591  
Investment Income (Loss), Realized 99,952 91,142 445,705 459,878  
Investment Income (Loss), Unrealized (179,298) 38,445 (262,024) 62,754  
Total Investment Income (Loss) (79,346) 129,587 183,681 522,632  
Interest and Dividend Revenue 26,244 18,107 70,129 47,516  
Other (813) 720 (2,478) 1,583  
Total Revenues 11,573 1,679,426 3,749,133 5,463,954  
Compensation and Benefits Compensation 393,655 525,093 1,426,233 1,511,085  
Performance Fee Compensation - Realized Carried Interest 97,798 186,003 628,079 595,702  
Performance Fee Compensation - Realized Incentive Fees 15,062 19,029 49,126 61,173  
Performance Fee Compensation - Unrealized Carried Interest (228,697) 164,132 (204,876) 319,158  
Performance Fee Compensation - Unrealized Incentive Fees (14,641) (9,002) 16,450 39,221  
Total Compensation and Benefits 263,177 885,255 1,915,012 2,526,339  
Total Expenses 476,997 1,055,138 2,533,997 3,032,770  
Economic Income (Loss) (482,291) 632,970 1,373,839 2,648,606  
Segment Assets 23,618,703   23,618,703   $ 31,497,097
Operating Segments          
Segment Reporting Information [Line Items]          
Management and Advisory Fees, Base Management Fees 564,287 505,493 1,597,176 1,478,941  
Management and Advisory Fees, Advisory Fees 146,153 84,131 307,389 269,008  
Management and Advisory Fees, Transaction and Other Fees, Net 32,403 90,885 81,204 199,991  
Management and Advisory Fees, Management Fee Offsets (34,176) (22,763) (70,555) (59,625)  
Total Management and Advisory Fees, Net 708,667 657,746 1,915,214 1,888,315  
Performance Fees Realized - Carried Interest 435,189 638,752 2,580,266 1,614,034  
Performance Fees Realized - Incentive Fees 34,785 36,840 112,274 129,968  
Performance Fees Unrealized - Carried Interest (1,055,977) 222,026 (1,124,074) 1,213,026  
Performance Fees Unrealized - Incentive Fees (53,346) (6,531) 35,585 111,511  
Total Performance Fees (639,349) 891,087 1,604,051 3,068,539  
Investment Income (Loss), Realized 87,526 75,832 331,815 389,948  
Investment Income (Loss), Unrealized (223,657) 4,934 (267,531) (16,744)  
Total Investment Income (Loss) (136,131) 80,766 64,284 373,204  
Interest and Dividend Revenue 35,459 23,585 96,936 68,041  
Other (841) 719 (1,740) 1,582  
Total Revenues (32,195) 1,653,903 3,678,745 5,399,681  
Compensation and Benefits Compensation 329,575 324,426 948,765 953,986  
Performance Fee Compensation - Realized Carried Interest 97,799 186,003 628,079 595,702  
Performance Fee Compensation - Realized Incentive Fees 15,061 19,029 49,125 61,173  
Performance Fee Compensation - Unrealized Carried Interest (228,697) 164,132 (204,876) 319,158  
Performance Fee Compensation - Unrealized Incentive Fees (14,642) (9,002) 16,450 39,221  
Total Compensation and Benefits 199,096 684,588 1,437,543 1,969,240  
Other Operating Expenses 157,565 131,440 469,248 416,325  
Total Expenses 356,661 816,028 1,906,791 2,385,565  
Economic Income (Loss) (388,856) 837,875 1,771,954 3,014,116  
Segment Assets 18,638,064   18,638,064    
Operating Segments | Private Equity Segment          
Segment Reporting Information [Line Items]          
Management and Advisory Fees, Base Management Fees 128,452 108,236 358,753 310,024  
Management and Advisory Fees, Transaction and Other Fees, Net 9,358 48,996 17,586 119,459  
Management and Advisory Fees, Management Fee Offsets (12,262) (5,837) (26,239) (11,796)  
Total Management and Advisory Fees, Net 125,548 151,395 350,100 417,687  
Performance Fees Realized - Carried Interest 214,532 124,913 1,144,085 457,112  
Performance Fees Unrealized - Carried Interest (809,363) 96,455 (548,114) 765,730  
Total Performance Fees (594,831) 221,368 595,971 1,222,842  
Investment Income (Loss), Realized 46,917 20,421 141,991 155,768  
Investment Income (Loss), Unrealized (110,689) (12,754) (101,503) (4,125)  
Total Investment Income (Loss) (63,772) 7,667 40,488 151,643  
Interest and Dividend Revenue 8,119 5,346 23,403 15,240  
Other 471 2,150 1,161 3,578  
Total Revenues (524,465) 387,926 1,011,123 1,810,990  
Compensation and Benefits Compensation 69,522 79,007 206,690 225,352  
Performance Fee Compensation - Realized Carried Interest 16,303 30,944 162,287 229,435  
Performance Fee Compensation - Unrealized Carried Interest (141,448) 93,434 11,098 132,480  
Total Compensation and Benefits (55,623) 203,385 380,075 587,267  
Other Operating Expenses 43,693 34,109 144,906 106,308  
Total Expenses (11,930) 237,494 524,981 693,575  
Economic Income (Loss) (512,535) 150,432 486,142 1,117,415  
Segment Assets 5,616,177   5,616,177    
Operating Segments | Real Estate Segment          
Segment Reporting Information [Line Items]          
Management and Advisory Fees, Base Management Fees 175,710 155,089 468,801 472,294  
Management and Advisory Fees, Transaction and Other Fees, Net 21,390 38,312 58,116 65,390  
Management and Advisory Fees, Management Fee Offsets (10,147) (8,977) (20,441) (25,903)  
Total Management and Advisory Fees, Net 186,953 184,424 506,476 511,781  
Performance Fees Realized - Carried Interest 169,051 349,237 1,344,283 961,721  
Performance Fees Realized - Incentive Fees 3,879 1,159 5,822 7,203  
Performance Fees Unrealized - Carried Interest (128,854) 187,175 (498,481) 446,873  
Performance Fees Unrealized - Incentive Fees 2,784 (374) 12,788 (1,120)  
Total Performance Fees 46,860 537,197 864,412 1,414,677  
Investment Income (Loss), Realized 39,821 49,173 196,597 203,194  
Investment Income (Loss), Unrealized (95,382) 14,492 (165,563) (30,566)  
Total Investment Income (Loss) (55,561) 63,665 31,034 172,628  
Interest and Dividend Revenue 11,057 7,135 31,313 21,254  
Other (938) 976 (3,838) 1,075  
Total Revenues 188,371 793,397 1,429,397 2,121,415  
Compensation and Benefits Compensation 99,255 90,586 263,573 256,401  
Performance Fee Compensation - Realized Carried Interest 52,546 64,187 415,210 259,462  
Performance Fee Compensation - Realized Incentive Fees 1,838 592 2,865 3,657  
Performance Fee Compensation - Unrealized Carried Interest (23,018) 108,789 (171,661) 193,113  
Performance Fee Compensation - Unrealized Incentive Fees 5,215 (123) 8,020 (524)  
Total Compensation and Benefits 135,836 264,031 518,007 712,109  
Other Operating Expenses 42,050 36,138 125,539 105,787  
Total Expenses 177,886 300,169 643,546 817,896  
Economic Income (Loss) 10,485 493,228 785,851 1,303,519  
Segment Assets 7,528,157   7,528,157    
Operating Segments | Hedge Fund Solutions Segment          
Segment Reporting Information [Line Items]          
Management and Advisory Fees, Base Management Fees 133,592 121,484 394,445 357,876  
Management and Advisory Fees, Transaction and Other Fees, Net 219 161 244 380  
Management and Advisory Fees, Management Fee Offsets (507) (1,099) (1,395) (4,085)  
Total Management and Advisory Fees, Net 133,304 120,546 393,294 354,171  
Performance Fees Realized - Incentive Fees 2,783 6,683 30,214 54,501  
Performance Fees Unrealized - Carried Interest (5,394)   2,620    
Performance Fees Unrealized - Incentive Fees (29,711) 25,473 33,571 74,114  
Total Performance Fees (32,322) 32,156 66,405 128,615  
Investment Income (Loss), Realized (468) 2,693 (12,600) 21,907  
Investment Income (Loss), Unrealized (6,411) (1,168) 104 4,320  
Total Investment Income (Loss) (6,879) 1,525 (12,496) 26,227  
Interest and Dividend Revenue 4,136 2,724 12,055 7,725  
Other (66) 740 (1,214) 659  
Total Revenues 98,173 157,691 458,044 517,397  
Compensation and Benefits Compensation 44,408 41,940 146,353 125,852  
Performance Fee Compensation - Realized Incentive Fees (436) 2,312 11,745 18,501  
Performance Fee Compensation - Unrealized Carried Interest (3,041)   1,036    
Performance Fee Compensation - Unrealized Incentive Fees (7,011) 8,778 12,404 26,791  
Total Compensation and Benefits 33,920 53,030 171,538 171,144  
Other Operating Expenses 24,147 20,480 65,852 65,061  
Total Expenses 58,067 73,510 237,390 236,205  
Economic Income (Loss) 40,106 84,181 220,654 281,192  
Segment Assets 1,763,698   1,763,698    
Operating Segments | Credit Segment          
Segment Reporting Information [Line Items]          
Management and Advisory Fees, Base Management Fees 126,533 120,684 375,177 338,747  
Management and Advisory Fees, Transaction and Other Fees, Net 1,289 3,025 4,806 13,433  
Management and Advisory Fees, Management Fee Offsets (11,260) (6,850) (22,480) (17,841)  
Total Management and Advisory Fees, Net 116,562 116,859 357,503 334,339  
Performance Fees Realized - Carried Interest 51,606 164,602 91,898 195,201  
Performance Fees Realized - Incentive Fees 28,123 28,998 76,238 68,264  
Performance Fees Unrealized - Carried Interest (112,366) (61,604) (80,099) 423  
Performance Fees Unrealized - Incentive Fees (26,419) (31,630) (10,774) 38,517  
Total Performance Fees (59,056) 100,366 77,263 302,405  
Investment Income (Loss), Realized 1,735 3,040 6,695 8,334  
Investment Income (Loss), Unrealized (10,177) 4,892 (530) 12,492  
Total Investment Income (Loss) (8,442) 7,932 6,165 20,826  
Interest and Dividend Revenue 6,053 5,968 17,642 16,721  
Other (73) (3,619) 3,454 (3,867)  
Total Revenues 55,044 227,506 462,027 670,424  
Compensation and Benefits Compensation 51,324 54,877 148,325 156,939  
Performance Fee Compensation - Realized Carried Interest 28,950 90,872 50,582 106,805  
Performance Fee Compensation - Realized Incentive Fees 13,659 16,125 34,515 39,015  
Performance Fee Compensation - Unrealized Carried Interest (61,190) (38,091) (45,349) (6,435)  
Performance Fee Compensation - Unrealized Incentive Fees (12,846) (17,657) (3,974) 12,954  
Total Compensation and Benefits 19,897 106,126 184,099 309,278  
Other Operating Expenses 24,898 20,860 70,273 75,858  
Total Expenses 44,795 126,986 254,372 385,136  
Economic Income (Loss) 10,249 100,520 207,655 285,288  
Segment Assets 2,775,812   2,775,812    
Operating Segments | Financial Advisory Segment          
Segment Reporting Information [Line Items]          
Management and Advisory Fees, Advisory Fees 146,153 84,131 307,389 269,008  
Management and Advisory Fees, Transaction and Other Fees, Net 147 391 452 1,329  
Total Management and Advisory Fees, Net 146,300 84,522 307,841 270,337  
Investment Income (Loss), Realized (479) 505 (868) 745  
Investment Income (Loss), Unrealized (998) (528) (39) 1,135  
Total Investment Income (Loss) (1,477) (23) (907) 1,880  
Interest and Dividend Revenue 6,094 2,412 12,523 7,101  
Other (235) 472 (1,303) 137  
Total Revenues 150,682 87,383 318,154 279,455  
Compensation and Benefits Compensation 65,066 58,016 183,824 189,442  
Total Compensation and Benefits 65,066 58,016 183,824 189,442  
Other Operating Expenses 22,777 19,853 62,678 63,311  
Total Expenses 87,843 77,869 246,502 252,753  
Economic Income (Loss) 62,839 $ 9,514 71,652 $ 26,702  
Segment Assets $ 954,220   $ 954,220