Variable Interest Entities and Noncontrolling Interests - Income or loss attributable to third party investors (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Noncontrolling Interest [Abstract]
Amounts attributable to non-redeemable noncontrolling interests	$ 233,944	$ (42,382)
Dividends attributable to redeemable noncontrolling interests	(1,153)	(4,588)
Net (income) loss attributable to noncontrolling interests	$ 232,791	$ (46,970)

Amount of Net Income (Loss) attributable to noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Portion of net income (loss) attributable to nonredeemable noncontrolling interest.

+ References

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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