LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Long-term debt	$ 8,924	$ 7,687
Less: Current maturities	605	532
Long-term debt	8,319	7,155
Notes Payable | 3.15% notes due June 2025
Debt Instrument [Line Items]
Long-term debt	$ 0	500
Notes interest rate, percentage	3.15%
Notes Payable | 1.25% euro notes due October 2025
Debt Instrument [Line Items]
Long-term debt	$ 587	557
Notes interest rate, percentage	1.25%
Notes Payable | 0.875% notes due October 2026
Debt Instrument [Line Items]
Long-term debt	$ 750	750
Notes interest rate, percentage	0.875%
Notes Payable | 1.80% notes due October 2027
Debt Instrument [Line Items]
Long-term debt	$ 500	500
Notes interest rate, percentage	1.80%
Notes Payable | 2.00% notes due December 2028
Debt Instrument [Line Items]
Long-term debt	$ 1,000	1,000
Notes interest rate, percentage	2.00%
Notes Payable | 2.00% euro notes due October 2029
Debt Instrument [Line Items]
Long-term debt	$ 587	557
Notes interest rate, percentage	2.00%
Notes Payable | 1.95% notes due October 2030
Debt Instrument [Line Items]
Long-term debt	$ 500	500
Notes interest rate, percentage	1.95%
Notes Payable | 3.00% euro notes due March 2031
Debt Instrument [Line Items]
Long-term debt	$ 587	0
Notes interest rate, percentage	3.00%
Notes Payable | 2.20% notes due December 2031
Debt Instrument [Line Items]
Long-term debt	$ 1,000	1,000
Notes interest rate, percentage	2.20%
Notes Payable | 6.00% notes due August 2032
Debt Instrument [Line Items]
Long-term debt	$ 250	250
Notes interest rate, percentage	6.00%
Notes Payable | 5.00% notes due March 2035
Debt Instrument [Line Items]
Long-term debt	$ 500	0
Notes interest rate, percentage	5.00%
Notes Payable | 3.50% euro notes due March 2037
Debt Instrument [Line Items]
Long-term debt	$ 587	0
Notes interest rate, percentage	3.50%
Notes Payable | 6.125% notes due April 2039
Debt Instrument [Line Items]
Long-term debt	$ 250	250
Notes interest rate, percentage	6.125%
Notes Payable | 5.25% notes due November 2039
Debt Instrument [Line Items]
Long-term debt	$ 300	300
Notes interest rate, percentage	5.25%
Notes Payable | 2.75% notes due October 2050
Debt Instrument [Line Items]
Long-term debt	$ 500	500
Notes interest rate, percentage	2.75%
Notes Payable | 2.80% notes due December 2051
Debt Instrument [Line Items]
Long-term debt	$ 1,000	1,000
Notes interest rate, percentage	2.80%
Notes Payable | Other
Debt Instrument [Line Items]
Long-term debt	$ 26	$ 23