Condensed Consolidated Statements of Changes in Unitholders' Capital (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	$ 1,581,018	$ 2,423,663	$ 1,702,169	$ 2,487,717
Accounting Standards Update [Extensible List]			us-gaap:AccountingStandardsUpdate201613Member
Capital contributions	37,500		$ 57,317
Repurchase and cancellation of units		(2,239)		(12,191)
Deferred tax effect resulting from the purchase of OCGH units		212,017
Equity reallocation between controlling and non-controlling interests	(223)		(1,295)
Capital increase related to equity-based compensation	4,058	26,680	13,096	60,685
Distributions declared	(85,260)	(507,895)	(133,962)	(818,857)
Net income	81,376	(16,690)	(13,603)	202,796
Foreign currency translation adjustment, net of tax	(5,919)	(5,780)	(10,816)	(2,411)
Unitholders' capital, end of period	1,612,550	2,129,756	1,612,550	2,129,756
Adoption of new accounting guidance (ASU 2016-13)
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period			(356)
Paid-in Capital
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	777,686	937,880	750,299	893,043
Capital contributions	37,500		57,317
Repurchase and cancellation of units		(941)		(8,378)
Deferred tax effect resulting from the purchase of OCGH units		212,017		212,017
Equity reallocation between controlling and non-controlling interests	(184)	267,715	1,829	304,280
Capital increase related to equity-based compensation	2,502	12,699	8,059	28,408
Distributions declared		(262,761)		(262,761)
Unitholders' capital, end of period	817,504	1,166,609	817,504	1,166,609
Retained Earnings (Accumulated Deficit)
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	(36,469)	60,056	51,534	100,683
Distributions declared	(48,352)	(43,408)	(69,797)	(173,733)
Net income	45,554	(16,648)	(20,784)	73,050
Unitholders' capital, end of period	(39,267)	0	(39,267)	0
Retained Earnings (Accumulated Deficit) | Adoption of new accounting guidance (ASU 2016-13)
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period			(220)
Accumulated Other Comprehensive Income (Loss)
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	(6,529)	2,404	(3,501)	1,053
Foreign currency translation adjustment, net of tax	(3,650)	(3,926)	(6,678)	(2,575)
Unitholders' capital, end of period	(10,179)	(1,522)	(10,179)	(1,522)
Non-controlling Interests in Consolidated Subsidiaries
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	445,746	1,022,739	503,253	1,092,354
Repurchase and cancellation of units		(1,298)		(3,813)
Equity reallocation between controlling and non-controlling interests	(39)	(267,715)	(3,124)	(304,280)
Capital increase related to equity-based compensation	1,556	13,981	5,037	32,277
Distributions declared	(30,079)	(194,897)	(43,678)	(361,876)
Net income	28,993	(6,871)	(13,306)	109,259
Foreign currency translation adjustment, net of tax	(2,269)	(1,854)	(4,138)	164
Unitholders' capital, end of period	$ 443,908	$ 564,085	443,908	$ 564,085
Non-controlling Interests in Consolidated Subsidiaries | Adoption of new accounting guidance (ASU 2016-13)
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period			$ (136)
Class A Units | Common Units
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period (in shares)	98,677	75,649	97,967	71,662
Issuance of units (in shares)		25,529		29,713
Unit exchange (in shares)			710
Cancellation of units associated with forfeitures (in shares)				(27)
Cancellation of units (in shares)		(3,122)		(3,122)
Repurchase and cancellation of units (in shares)		(89)		(259)
Unitholders' capital, end of period (in shares)	98,677	97,967	98,677	97,967
Class B Units | Common Units
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period (in shares)	61,386	84,001	61,793	85,472
Issuance of units (in shares)		3,675	319	5,113
Unit exchange (in shares)			(710)
Cancellation of units associated with forfeitures (in shares)	(2)		(18)	(119)
Cancellation of units (in shares)		(200)		(2,917)
Repurchase and cancellation of units (in shares)		(25,330)		(25,403)
Unitholders' capital, end of period (in shares)	61,384	62,146	61,384	62,146
Series A Preferred Units | Preferred Stock
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	$ 173,669	$ 173,669	$ 173,669	$ 173,669
Distributions declared	(2,981)	(2,981)	(8,943)	(8,943)
Net income	2,981	2,981	8,943	8,943
Unitholders' capital, end of period	173,669	173,669	173,669	173,669
Series B Preferred Units | Preferred Stock
Increase (decrease) in Stockholders' Equity:
Unitholders' capital, beginning of period	226,915	226,915	226,915	226,915
Distributions declared	(3,848)	(3,848)	(11,544)	(11,544)
Net income	3,848	3,848	11,544	11,544
Unitholders' capital, end of period	$ 226,915	$ 226,915	$ 226,915	$ 226,915