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DEBT - Schedule of Components of Debt Interest Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Line of Credit Facility [Line Items] |  |  |  |
Amortization of debt issuance costs |  |  | $ 23 | $ 22
Net amortization of original issue premium/discount |  |  | (3) | (3)
Interest and credit facility fees | $ 145 | $ 120 | 425 | 314
Cash paid for interest expense |  |  | 407 | 303
Convertible Debt |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest expense | 5 | 5 | 14 | 15
Amortization of debt issuance costs | 0 | 0 | 0 | 1
Net amortization of original issue premium/discount | 1 | 0 | 2 | 2
Interest and credit facility fees | 6 | 5 | 16 | 18
Cash paid for interest expense | 0 | 9 | 9 | 26
Senior Notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest expense | 69 | 67 | 193 | 202
Amortization of debt issuance costs | 4 | 4 | 11 | 11
Net amortization of original issue premium/discount | (2) | (2) | (5) | (5)
Interest and credit facility fees | 71 | 69 | 199 | 208
Cash paid for interest expense | 75 | 79 | 209 | 213
Revolving Credit Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Average outstanding balance | 1,479 | 1,875 | 1,885 | 1,402
Revolving Credit Facility | Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest expense | 26 | 19 | 94 | 34
Credit facility fees | 3 | 5 | 9 | 7
Amortization of debt issuance costs | 2 | 2 | 6 | 5
Interest and credit facility fees | 31 | 26 | 109 | 46
Cash paid for interest expense | $ 28 | $ 19 | $ 103 | $ 35
Average stated interest rate | 7.25% | 3.95% | 6.64% | 3.15%
Revolving Funding Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Average outstanding balance | $ 863 | $ 944 | $ 847 | $ 805
Revolving Funding Facility | Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest expense | 16 | 10 | 44 | 19
Credit facility fees | 1 | 1 | 4 | 3
Amortization of debt issuance costs | 1 | 1 | 3 | 2
Interest and credit facility fees | 18 | 12 | 51 | 24
Cash paid for interest expense | $ 16 | $ 9 | $ 43 | $ 19
Average stated interest rate | 7.46% | 4.38% | 6.96% | 3.17%
SMBC Funding Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Average outstanding balance | $ 401 | $ 402 | $ 414 | $ 403
SMBC Funding Facility | Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest expense | 7 | 4 | 21 | 9
Credit facility fees | 1 | 1 | 2 | 2
Amortization of debt issuance costs | 1 | 1 | 2 | 2
Interest and credit facility fees | 9 | 6 | 25 | 13
Cash paid for interest expense | $ 7 | $ 4 | $ 21 | $ 9
Average stated interest rate | 7.34% | 4.27% | 6.78% | 3.00%
BNP Funding Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Average outstanding balance | $ 493 | $ 143 | $ 401 | $ 81
BNP Funding Facility | Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest expense | 10 | 2 | 23 | 3
Credit facility fees | 0 | 0 | 1 | 1
Amortization of debt issuance costs | 0 | 0 | 1 | 1
Interest and credit facility fees | 10 | 2 | 25 | 5
Cash paid for interest expense | $ 10 | $ 1 | $ 22 | $ 1
Average stated interest rate | 8.32% | 4.35% | 7.75% | 3.95%

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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 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-1A Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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