Segment Reporting - ADJ EBITDA Reconciliations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Income (Loss) Available to Common Stockholders, Basic	$ 206,354	$ 104,843	$ 373,245	$ 149,669
Net (loss) income attributable to noncontrolling interest	443	89	831	65
Preferred Stock Dividends, Income Statement Impact	14,352	14,352	28,704	28,704
Provision for income taxes	79,887	32,800	117,541	39,331
Nonoperating Income (Expense)	68,478	67,590	132,098	137,963
Depreciation and amortization	45,866	46,704	92,846	87,913
Other Nonoperating Income (Expense)	1,195	(802)	2,319	(3,609)
StockBasedCompensationExpenseEBITDA	14,458	5,949	22,008	10,642
MergerRelatedAndIntegrationCosts	13,427	37,720	38,990	84,042
Gain (Loss) on Disposition of Business			0	(8,927)
Adjusted EBITDA	444,460	309,245	808,582	525,793
Stock-based compensation expense	$ 15,800	$ 7,200	$ 24,734	$ 13,179
Adjusted EBITDA Margin %	8.10%	6.70%	7.80%	6.10%
Merger Related Stock Based Compensation Expense	$ (1,400)	$ (1,300)	$ (2,700)	$ (2,500)
EES
Net Income (Loss) Available to Common Stockholders, Basic	222,758	153,976	401,493	254,606
Net (loss) income attributable to noncontrolling interest	151	(76)	361	(151)
Preferred Stock Dividends, Income Statement Impact	0	0	0	0
Provision for income taxes	0	0	0	0
Nonoperating Income (Expense)	0	0	0	0
Depreciation and amortization	11,198	12,781	23,222	23,344
Other Nonoperating Income (Expense)	1,403	160	1,577	603
StockBasedCompensationExpenseEBITDA	2,745	1,434	4,366	2,785
MergerRelatedAndIntegrationCosts	0	0	0	0
Gain (Loss) on Disposition of Business				0
Adjusted EBITDA	$ 235,449	$ 167,955	$ 427,865	$ 279,981
Adjusted EBITDA Margin %	10.10%	8.70%	9.70%	7.70%
CSS
Net Income (Loss) Available to Common Stockholders, Basic	$ 130,639	$ 111,046	$ 234,326	$ 184,639
Net (loss) income attributable to noncontrolling interest	0	0	0	0
Preferred Stock Dividends, Income Statement Impact	0	0	0	0
Provision for income taxes	0	0	0	0
Nonoperating Income (Expense)	0	0	0	0
Depreciation and amortization	17,855	19,241	35,986	35,534
Other Nonoperating Income (Expense)	(106)	(211)	(450)	(581)
StockBasedCompensationExpenseEBITDA	1,442	641	2,319	1,066
MergerRelatedAndIntegrationCosts	0	0	0	0
Gain (Loss) on Disposition of Business				0
Adjusted EBITDA	$ 150,042	$ 131,139	$ 273,081	$ 221,820
Adjusted EBITDA Margin %	9.40%	9.00%	9.00%	8.20%
UBS
Net Income (Loss) Available to Common Stockholders, Basic	$ 161,784	$ 94,688	$ 291,766	$ 181,701
Net (loss) income attributable to noncontrolling interest	0	0	0	0
Preferred Stock Dividends, Income Statement Impact	0	0	0	0
Provision for income taxes	0	0	0	0
Nonoperating Income (Expense)	0	0	0	0
Depreciation and amortization	5,670	5,466	11,456	10,676
Other Nonoperating Income (Expense)	(644)	(5)	(610)	(22)
StockBasedCompensationExpenseEBITDA	937	543	1,563	883
MergerRelatedAndIntegrationCosts	0	0	0	0
Gain (Loss) on Disposition of Business				8,927
Adjusted EBITDA	$ 169,035	$ 100,702	$ 305,395	$ 184,355
Adjusted EBITDA Margin %	10.90%	8.30%	10.30%	8.10%
Corporate Segment
Net Income (Loss) Available to Common Stockholders, Basic	$ (308,827)	$ (254,867)	$ (554,340)	$ (471,277)
Net (loss) income attributable to noncontrolling interest	292	165	470	216
Preferred Stock Dividends, Income Statement Impact	14,352	14,352	28,704	28,704
Provision for income taxes	79,887	32,800	117,541	39,331
Nonoperating Income (Expense)	(68,478)	(67,590)	(132,098)	(137,963)
Depreciation and amortization	11,143	9,216	22,182	18,359
Other Nonoperating Income (Expense)	(1,848)	858	(2,836)	3,609
StockBasedCompensationExpenseEBITDA	9,334	3,331	13,760	5,908
MergerRelatedAndIntegrationCosts	13,427	37,720	38,990	84,042
Gain (Loss) on Disposition of Business				0
Adjusted EBITDA	$ (110,066)	$ (90,551)	$ (197,759)	$ (160,363)