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LONG-TERM DEBT - Senior Notes (Details) - USD ($) $ in Millions |  |  |  |  |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 04, 2022 | Mar. 12, 2021 | Jun. 04, 2020 | Sep. 16, 2019 | Sep. 06, 2019 | Sep. 22, 2016 | Sep. 15, 2016 | Sep. 15, 2016 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021 | Aug. 01, 2019 | Feb. 01, 2016 | Jun. 21, 2013
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  |  | $ 0 | $ 9 | $ 17 |  |  |
Senior Notes 2023 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate per annum (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.875%
Repayments of senior debt | $ 609 |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt | 9 |  |  |  |  |  |  |  |  |  |  |  |  |
Early Repayment of Senior Debt | 600 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Increase, Accrued Interest | $ 7 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance date of debt |  |  |  |  |  | Sep. 22, 2016 |  |  |  |  |  |  |  |
Aggregate face amount of debt |  |  |  |  |  | $ 300 |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  | Sep. 22, 2026 |  |  |  |  |  |  |  |
Fixed interest rate per annum (in hundredths) |  |  |  |  |  | 3.05% |  |  |  |  |  |  |  |
Interest payment frequency |  |  |  |  |  | semi-annually |  |  |  |  |  |  |  |
Date payments commenced |  |  |  |  |  | Mar. 22, 2017 |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  |  |  | 99.624% |  |  |  |  |  |  |  |
Senior Notes 2029 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance date of debt |  |  |  | Sep. 16, 2019 |  |  |  |  |  |  |  |  |  |
Aggregate face amount of debt |  |  |  | $ 500 |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | Sep. 15, 2029 |  |  |  |  |  |  |  |  |  |
Fixed interest rate per annum (in hundredths) |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |
Interest payment frequency |  |  |  | semi-annually |  |  |  |  |  |  |  |  |  |
Date payments commenced |  |  |  | Mar. 15, 2020 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 99.316% |  |  |  |  |  |  |  |  |  |
Senior Notes 2030 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance date of debt |  |  | Jun. 04, 2020 |  |  |  |  |  |  |  |  |  |  |
Aggregate face amount of debt |  |  | $ 500 |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  | Jun. 04, 2030 |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate per annum (in hundredths) |  |  | 2.10% |  |  |  |  |  |  |  |  |  |  |
Interest payment frequency |  |  | semi-annually |  |  |  |  |  |  |  |  |  |  |
Date payments commenced |  |  | Dec. 04, 2020 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  | 99.812% |  |  |  |  |  |  |  |  |  |  |
Senior Notes 2031 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance date of debt |  | Mar. 12, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Aggregate face amount of debt |  | $ 850 |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  | Mar. 12, 2031 |  |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate per annum (in hundredths) |  | 2.30% |  |  |  |  |  |  |  |  |  |  |  |
Date payments commenced |  | Sep. 12, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 99.822% |  |  |  |  |  |  |  |  |  |  |  |
Treasury Lock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  |  |  |  |  |  | $ 250 |  |
Treasury Lock | Senior Notes 2029 | Cash Flow Hedges | Derivatives Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  |  |  |  |  |  | $ 250 |  |
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred |  |  |  |  | $ (6) |  |  |  | (3) |  |  |  |  |
Interest Rate Swap [Member] | Senior Notes 2026 | Cash Flow Hedges | Derivatives Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 300 |
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred |  |  |  |  |  |  | $ (10) | $ (10) | $ (3) |  |  |  |  |

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