DEBT - Schedule of Foreign Denominated Debt (Details) $ in Millions	Sep. 30, 2025 USD ($)	Sep. 30, 2025 EUR (€)	Sep. 30, 2025 GBP (£)
0.875% Notes - due 2026
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	0.875%	0.875%	0.875%
Borrowings Outstanding	$ 704	€ 600,000,000
4.375% Notes - due 2027
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.375%	4.375%	4.375%
Borrowings Outstanding	$ 997	€ 850,000,000
4.500% Notes - due 2030
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.50%	4.50%	4.50%
Borrowings Outstanding	$ 763	€ 650,000,000
2.875% Notes - due 2029
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.875%	2.875%	2.875%
Borrowings Outstanding	$ 336		£ 250,000,000
2.834% Amortizing credit facility - due 2025-2029 \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.834%	2.834%	2.834%
Capacity \| €		€ 200,000,000
Borrowings Outstanding	$ 205	175,000,000
Committed bank facility maturing May 2027 \| Revolving Credit Facility
Debt Instrument [Line Items]
Capacity \| £			£ 1,250,000,000
Borrowings Outstanding	1,214	1,035,000,000
Uncommitted facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Capacity \| £			£ 50,000,000
Borrowings Outstanding	65	55,000,000
Committed bank facility maturing December 2026 \| Revolving Credit Facility
Debt Instrument [Line Items]
Capacity \| €		60,000,000
Borrowings Outstanding	$ 0	€ 0

Contractual interest rate for funds borrowed, under the debt agreement.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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