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CREDIT FACILITIES AND LONG-TERM DEBT - Summary of Credit Facilities and Long-Term Debt (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 11,300 |
Net Carrying Amount | 3,176 | $ 1,862
Outstanding, current | 3,362 | 4,240
Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | 7,800 |
Outstanding amount, current | 3,362 | 4,240
Outstanding amount, noncurrent | 1,650 | 900
Issuance costs | (16) | (3)
Net Carrying Amount | 1,634 | 897
Line of Credit | Asset-backed Mezzanine Term Debt Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | 3,500 |
Outstanding amount, current | 0 | 0
Outstanding amount, noncurrent | 1,575 | 1,000
Issuance costs | (33) | (35)
Net Carrying Amount | 1,542 | 965
Secured Debt |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | 100 |
Net Carrying Amount | 0 | 0
Outstanding, current | 12 | 7
Secured Debt | Repo Facility 2019-R1 |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | 100 |
Outstanding amount, current | 12 | 7
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 2.43% | 1.84%
Revolving Facility 2018-2 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 1,000 |
Outstanding amount, current | 104 | $ 759
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 3.07% | 2.84%
Revolving Facility 2018-3 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 750 |
Outstanding amount, current | 271 | $ 673
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 2.62% | 2.39%
Revolving Facility 2019-1 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 900 |
Outstanding amount, current | 876 | $ 648
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 3.43% | 2.84%
Revolving Facility 2019-2 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 1,850 |
Outstanding amount, current | 1,809 | $ 1,149
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 2.89% | 2.52%
Revolving Facility 2019-3 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 925 |
Outstanding amount, current | 252 | $ 886
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 3.42% | 3.25%
Revolving Facility 2021-1 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 125 |
Outstanding amount, current | 50 | $ 125
Outstanding amount, noncurrent | $ 0 | $ 0
Weighted average interest rate (in percent) | 2.46% | 2.15%
Term Debt Facility 2021-S1 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 400 |
Outstanding amount, current | 0 | $ 0
Outstanding amount, noncurrent | $ 400 | $ 400
Weighted average interest rate (in percent) | 3.48% | 3.48%
Term Debt Facility 2021-S2 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 600 |
Outstanding amount, current | 0 | $ 0
Outstanding amount, noncurrent | $ 500 | $ 500
Weighted average interest rate (in percent) | 3.20% | 3.20%
Term Debt Facility 2021-S3 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 1,000 |
Outstanding amount, current | 0 | $ 0
Outstanding amount, noncurrent | $ 500 | $ 0
Weighted average interest rate (in percent) | 3.75% | 3.75%
Term Debt Facility 2022-S1 | Line of Credit | Asset-backed Senior Revolving Credit Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 250 |
Outstanding amount, current | 0 |
Outstanding amount, noncurrent | $ 250 |
Weighted average interest rate (in percent) | 4.07% |
Term Debt Facility 2020-M1 | Line of Credit | Asset-backed Mezzanine Term Debt Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 3,000 |
Outstanding amount, current | 0 | $ 0
Outstanding amount, noncurrent | $ 1,500 | $ 1,000
Weighted average interest rate (in percent) | 10.00% | 10.00%
Term Debt Facility 2022-M1 | Line of Credit | Asset-backed Mezzanine Term Debt Facilities |  |
Debt Instrument [Line Items] |  |
Borrowing Capacity | $ 500 |
Outstanding amount, current | 0 |
Outstanding amount, noncurrent | $ 75 |
Weighted average interest rate (in percent) | 10.00% |

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