JOINT VENTURES - Changes in Noncontrolling Interests (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stockholders' Equity
Beginning balance	$ (247)	$ (720)	$ (557)
Net (loss) income attributable to noncontrolling interests	10	2	4
Contribution from noncontrolling interest holders, net	49	82	98
Distributions paid to noncontrolling interest holders	(80)	(64)	(8)
Ending balance	(296)	(247)	(720)
Noncontrolling Interest
Stockholders' Equity
Beginning balance	114	94
Net (loss) income attributable to noncontrolling interests	10	2
Contribution from noncontrolling interest holders, net	49	82	98
Distributions paid to noncontrolling interest holders	(80)	(64)	(8)
Ending balance	93	114	94
Noncontrolling Interest \| Ares JV
Stockholders' Equity
Beginning balance	15	0
Net (loss) income attributable to noncontrolling interests	(7)	(11)
Contribution from noncontrolling interest holders, net	0	33
Distributions paid to noncontrolling interest holders	(8)	(7)
Ending balance	0	15	0
Noncontrolling Interest \| BSP JV
Stockholders' Equity
Beginning balance	99	94
Net (loss) income attributable to noncontrolling interests	17	13
Contribution from noncontrolling interest holders, net	49	49
Distributions paid to noncontrolling interest holders	(72)	(57)
Ending balance	$ 93	$ 99	$ 94

Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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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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Amount after tax of income (loss) attributable to nonredeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture.

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Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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