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DEBT - Schedule of Components of Debt Interest Expense (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Line of Credit Facility [Line Items] |  |  |
Amortization of debt issuance costs | $ 30 | $ 29 | $ 23
Net (amortization) accretion of original issue premium/discount | (4) | 2 | 8
Interest Expense, Total | 455 | 372 | 317
Cash paid for interest expense | 402 | 310 | 243
Convertible Debt |  |  |
Line of Credit Facility [Line Items] |  |  |
Stated interest expense | 20 | 33 | 33
Amortization of debt issuance costs | 1 | 3 | 3
Net (amortization) accretion of original issue premium/discount | 2 | 6 | 5
Interest Expense, Total | 23 | 42 | 41
Cash paid for interest expense | 26 | 34 | 33
Senior Notes |  |  |
Line of Credit Facility [Line Items] |  |  |
Stated interest expense | 269 | 234 | 168
Amortization of debt issuance costs | 15 | 11 | 6
Net (amortization) accretion of original issue premium/discount | (6) | (4) | 1
Accretion of purchase discount | 0 | 0 | 1
Interest Expense, Total | 278 | 241 | 176
Cash paid for interest expense | 268 | 234 | 140
Revolving Credit Facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Average outstanding balance | 1,701 | 1,014 | 1,576
Revolving Credit Facility | Line of Credit |  |  |
Line of Credit Facility [Line Items] |  |  |
Stated interest expense | 71 | 21 | 43
Credit facility fees | 10 | 17 | 7
Amortization of debt issuance costs | 8 | 7 | 7
Interest Expense, Total | 89 | 45 | 57
Cash paid for interest expense | $ 62 | $ 20 | $ 41
Average stated interest rate | 4.11% | 2.14% | 2.58%
Revolving Funding Facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Average outstanding balance | $ 820 | $ 643 | $ 761
Revolving Funding Facility | Line of Credit |  |  |
Line of Credit Facility [Line Items] |  |  |
Stated interest expense | 31 | 15 | 20
Credit facility fees | 5 | 6 | 5
Amortization of debt issuance costs | 3 | 4 | 4
Interest Expense, Total | 39 | 25 | 29
Cash paid for interest expense | $ 29 | $ 17 | $ 19
Average stated interest rate | 3.81% | 2.33% | 2.54%
SMBC Funding Facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Average outstanding balance | $ 414 | $ 191 | $ 390
SMBC Funding Facility | Line of Credit |  |  |
Line of Credit Facility [Line Items] |  |  |
Stated interest expense | 15 | 4 | 10
Credit facility fees | 2 | 6 | 1
Amortization of debt issuance costs | 2 | 3 | 3
Interest Expense, Total | 19 | 13 | 14
Cash paid for interest expense | $ 14 | $ 4 | $ 10
Average stated interest rate | 3.58% | 2.05% | 2.36%
BNP Funding Facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Average outstanding balance | $ 110 | $ 15 |
BNP Funding Facility | Line of Credit |  |  |
Line of Credit Facility [Line Items] |  |  |
Stated interest expense | 5 | 1 |
Credit facility fees | 1 | 4 |
Amortization of debt issuance costs | 1 | 1 |
Interest Expense, Total | 7 | 6 |
Cash paid for interest expense | $ 3 | $ 1 |
Average stated interest rate | 4.71% | 3.46% |

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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