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FAIR VALUE DISCLOSURES (Tables) | 6 Months Ended
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Jun. 30, 2023
Fair Value Disclosures [Abstract] |
Fair Value Measurement Methodologies | The following table summarizes the fair value measurement methodologies, including significant inputs and assumptions, and classification of the Company’s assets and liabilities.
Asset/Liability Class |  | Valuation Methodology, Inputs and Assumptions |  | Classification
Cash and cash equivalents |  | Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. |  | Level 1 estimated fair value measurement.
Restricted cash |  | Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. |  | Level 1 estimated fair value measurement.
Marketable securities |  |  |  |
Debt securities |  | Prices obtained from third-party vendors that compile prices from various sources and often apply matrix pricing for similar securities when no price is observable. |  | Level 2 recurring fair value measurement.
Equity securities |  | Price is quoted given the securities are traded on an exchange. |  | Level 1 recurring fair value measurement.
Other current assets |  |  |  |
Mortgage loans held for sale |  | Fair value is estimated based on observable market data including quoted market prices and deal price quotes. |  | Level 2 recurring fair value measurement.
Non-recourse asset-backed debt |  |  |  |
Credit facilities |  | Fair value is estimated using discounted cash flows based on current lending rates for similar credit facilities with similar terms and remaining time to maturity. |  | Carried at amortized cost. Level 2 estimated fair value measurement.
Convertible senior notes |  | Fair value is estimated using broker quotes and other observable market inputs. |  | Carried at amortized cost. Level 2 estimated fair value measurement.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following tables present the levels of the fair value hierarchy for the Company’s assets measured at fair value on a recurring basis (in millions):
June 30, 2023 |  | Balance at Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Marketable securities: |  |  |  |  |  |  |  |
Corporate debt securities |  | $ | 71 |  |  | $ | — |  |  | $ | 71 |  |  | $ | — |
Equity securities |  | 18 |  |  | 18 |  |  | — |  |  | — |
Asset-backed securities |  | 1 |  |  | — |  |  | 1 |  |  | — |
Total assets |  | $ | 90 |  |  | $ | 18 |  |  | $ | 72 |  |  | $ | — |
December 31, 2022 |  | Balance at Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Marketable securities: |  |  |  |  |  |  |  |
Corporate debt securities |  | $ | 122 |  |  | $ | — |  |  | $ | 122 |  |  | $ | — |
Equity securities |  | 11 |  |  | 11 |  |  | — |  |  | — |
Certificates of deposit |  | 9 |  |  | — |  |  | 9 |  |  | — |
Asset-backed securities |  | 2 |  |  | — |  |  | 2 |  |  | — |
Other current assets: |  |  |  |  |  |  |  |
Mortgage loans held for sale |  | 1 |  |  | — |  |  | 1 |  |  | — |
Total assets |  | $ | 145 |  |  | $ | 11 |  |  | $ | 134 |  |  | $ | — |
Fair Value Disclosure of Asset and Liability Not Measured at Fair Value | The following presents the carrying value, estimated fair value and the levels of the fair value hierarchy for the Company’s financial instruments other than assets and liabilities measured at fair value on a recurring basis (in millions):
|  | June 30, 2023
|  | Carrying Value |  | Fair Value |  | Level 1 |  | Level 2
Assets: |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1,120 |  |  | $ | 1,120 |  |  | $ | 1,120 |  |  | $ | — |
Restricted cash |  | 1,684 |  |  | 1,684 |  |  | 1,684 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |
Non-recourse asset-backed debt |  | $ | 2,542 |  |  | $ | 2,565 |  |  | $ | — |  |  | $ | 2,565 |
Convertible senior notes |  | 501 |  |  | 353 |  |  | — |  |  | 353 |
|  | December 31, 2022
|  | Carrying Value |  | Fair Value |  | Level 1 |  | Level 2
Assets: |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1,137 |  |  | $ | 1,137 |  |  | $ | 1,137 |  |  | $ | — |
Restricted cash |  | 654 |  |  | 654 |  |  | 654 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |
Non-recourse asset-backed debt |  | $ | 4,396 |  |  | $ | 4,427 |  |  | $ | — |  |  | $ | 4,427 |
Convertible senior notes |  | 959 |  |  | 391 |  |  | — |  |  | 391 |

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- Definition Tabular disclosure of information about fair value of asset and liability not measured at fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2E + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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