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DEBT - Senior Secured Term Loans Facility (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024	Feb. 27, 2024
Debt Instrument [Line Items]
Gross Amount	$ 29,520	$ 24,581
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	910	$ 910
Line of Credit Facility, Remaining Borrowing Capacity	$ 857
Interest rate		2.25%	2.25%
Debt Instrument, Unused Portion, Fee, Percent	0.50%	0.50%
Term loans
Debt Instrument [Line Items]
Gross Amount	$ 11,124	$ 8,702
Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity		$ 843

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