Noncontrolling Interests - Redeemable Noncontrolling Interest (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interests	$ 577,660	$ 445,617	$ 284,121
Fair value of Debt Securities exchanged for 2016 Preferred Units	(167,799)	0	0
Fair value of 2019 Preferred Units exchanged for 2016 Preferred Units	(137,759)	0	0
Issuance of 2019 Preferred Units, net of issuance costs	136,964	0	0
Preferred Units issuance, net of issuance costs	0	0	150,054
Change in redemption value of Preferred Units	(101,406)	0	7,446
Capital contributions	3,747	147,217	2,329
Capital distributions	(126,778)	(15,465)	0
Funds deconsolidation	(43,374)	0	0
Comprehensive income	8,745	291	1,667
Redeemable Noncontrolling Interests	150,000	577,660	445,617
Funds
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interests	157,660	25,617	21,621
Fair value of Debt Securities exchanged for 2016 Preferred Units	0	0	0
Fair value of 2019 Preferred Units exchanged for 2016 Preferred Units	0	0	0
Issuance of 2019 Preferred Units, net of issuance costs	0	0	0
Preferred Units issuance, net of issuance costs			0
Change in redemption value of Preferred Units	0	0	0
Capital contributions	3,747	147,217	2,329
Capital distributions	(126,778)	(15,465)	0
Funds deconsolidation	(43,374)	0	0
Comprehensive income	8,745	291	1,667
Redeemable Noncontrolling Interests	0	157,660	25,617
Preferred Units
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interests	420,000	420,000	262,500
Fair value of Debt Securities exchanged for 2016 Preferred Units	(167,799)	0	0
Fair value of 2019 Preferred Units exchanged for 2016 Preferred Units	(137,759)	0	0
Issuance of 2019 Preferred Units, net of issuance costs	136,964	0	0
Preferred Units issuance, net of issuance costs			150,054
Change in redemption value of Preferred Units	(101,406)	0	7,446
Capital contributions	0	0	0
Capital distributions	0	0	0
Funds deconsolidation	0	0	0
Comprehensive income	0	0	0
Redeemable Noncontrolling Interests	$ 150,000	$ 420,000	$ 420,000

Fair Value of 2019 Preferred Units Exchanged for 2016 Preferred Units

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Fair Value of Debt Securities Exchanged for 2016 Preferred Units

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Issuance of 2019 Preferred Units, net of issuance costs

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The amount of the reduction or elimination during the period of a redeemable noncontrolling interest resulting from deconsolidation of the entity in which one or more outside parties had a redeemable noncontrolling interest.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

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

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The cash outflow during the period for redemption of redeemable noncontrolling interests.

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The cash inflow from issuance of preferred stock that is classified as callable.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Value of new stock classified as temporary equity issued during the period.

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