DEBT - 2018 Revolving Credit Facility (Details)	3 Months Ended
	Dec. 31, 2023 USD ($) ratingAgency
Line of Credit Facility [Line Items]
Accordion feature	$ 3,650,000,000
Revolving Credit Facility | 3 Year Revolving Credit Facility
Line of Credit Facility [Line Items]
Purchasing card maximum limit	1,325,000,000
Borrowing capacity available for letters of credit	$ 250,000,000
Debt instrument term	3 years
Number of rating agencies with stable rating | ratingAgency	2
Revolving Credit Facility | 5 Year Revolving Credit Facility
Line of Credit Facility [Line Items]
Purchasing card maximum limit	$ 1,325,000,000
Borrowing capacity available for letters of credit	$ 250,000,000
Debt instrument term	5 years
Letter of Credit
Line of Credit Facility [Line Items]
Purchasing card maximum limit	$ 360,000,000
Debt instrument term	3 years