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Debt Obligations, net (Schedule of Debt) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
		Jun. 30, 2018	Mar. 31, 2022		Mar. 31, 2021	Dec. 31, 2021		Dec. 31, 2020
Debt Instrument [Line Items]
Total debt obligations			$ 2,112,500
Debt discounts and deferred financing costs, net			(28,248)			$ (32,201)
Total debt obligations, net	[1]		2,084,252			2,572,174
Stockholders' equity			1,784,950	[1]	$ 1,051,007	1,063,206	[1]	$ 1,064,383
Interest costs capitalized			$ 300		$ 200
Period of Adoption, Adjustment
Debt Instrument [Line Items]
Stockholders' equity								$ (10,019)
Senior Term Loan | LIBOR
Debt Instrument [Line Items]
Basis point spread on variable interest rate			1.00%
3.125% Senior Convertible Notes
Debt Instrument [Line Items]
Stated interest rate			3.125%		3.125%
Secured Debt
Debt Instrument [Line Items]
Total debt obligations			$ 0			491,875
Debt discounts and deferred financing costs, net			0
Total debt obligations, net			0
Secured Debt | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt obligations			$ 0			0
Debt instrument term			1 year
Secured Debt | Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Basis point spread on variable interest rate			2.00%
Secured Debt | Revolving Credit Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Basis point spread on variable interest rate			1.00%
Secured Debt | Revolving Credit Facility | LIBOR | Minimum | Interest Rate Category Two
Debt Instrument [Line Items]
Basis point spread on variable interest rate			2.00%
Secured Debt | Revolving Credit Facility | LIBOR | Maximum | Interest Rate Category Two
Debt Instrument [Line Items]
Basis point spread on variable interest rate			2.50%
Secured Debt | Revolving Credit Facility | Federal Funds Rate
Debt Instrument [Line Items]
Basis point spread on variable interest rate			0.50%
Secured Debt | Revolving Credit Facility | Base Rate | Minimum | Interest Rate Category One
Debt Instrument [Line Items]
Basis point spread on variable interest rate			1.00%
Secured Debt | Revolving Credit Facility | Base Rate | Maximum | Interest Rate Category One
Debt Instrument [Line Items]
Basis point spread on variable interest rate			1.50%
Secured Debt | Senior Term Loan
Debt Instrument [Line Items]
Total debt obligations			$ 0			491,875
Secured Debt | Senior Term Loan | LIBOR
Debt Instrument [Line Items]
Basis point spread on variable interest rate		2.75%	2.75%
Secured Debt | Senior Term Loan | LIBOR | Maximum
Debt Instrument [Line Items]
Basis point spread on variable interest rate			1.75%
Secured Debt | Senior Term Loan | Federal Funds Rate
Debt Instrument [Line Items]
Basis point spread on variable interest rate			0.50%
Unsecured notes
Debt Instrument [Line Items]
Total debt obligations			$ 2,012,500			2,012,500
Unsecured notes | 3.125% Senior Convertible Notes
Debt Instrument [Line Items]
Total debt obligations			$ 287,500			$ 287,500
Stated interest rate			3.125%		3.125%	3.125%
Convertible debt, conversion ratio (in shares per par value)			0.0723126
Convertible debt, conversion price (in dollars per share)			$ 13.83
Contractual interest			$ 2,200		$ 2,200
Unsecured notes | 4.75% Senior Notes
Debt Instrument [Line Items]
Total debt obligations			$ 775,000			$ 775,000
Stated interest rate			4.75%
Unsecured notes | 4.25% Senior Notes
Debt Instrument [Line Items]
Total debt obligations			$ 550,000			550,000
Stated interest rate			4.25%
Unsecured notes | 5.50% Senior Notes
Debt Instrument [Line Items]
Total debt obligations			$ 400,000			400,000
Stated interest rate			5.50%
Other Debt Obligations
Debt Instrument [Line Items]
Total debt obligations			$ 2,112,500			2,604,375
Other Debt Obligations | Trust Preferred Securities
Debt Instrument [Line Items]
Total debt obligations			$ 100,000			$ 100,000
Basis point spread on variable interest rate			1.50%
[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).

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