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REAL ESTATE INVENTORY - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) home	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) home	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Inventory Disclosure [Abstract]
Inventory valuation adjustments	$ 45		$ 45		$ 459
Number of homes under contract to be purchased | home	1,390		1,390
Aggregate purchase price for homes	$ 469		$ 469
Valuation adjustments	$ 14	$ 82	$ 37	$ 90

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- Definition

Inventory, Real Estate, Valuation Adjustment (Decrease) Increase)

+ References

No definition available.

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- Definition

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483080/330-10-50-1

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- References

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- Definition

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482648/440-10-50-6

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- Definition

The minimum number of units that must be purchased, in connection with an unconditional purchase obligation that has been recognized for financial reporting purposes.

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