NOTES PAYABLE, LONG-TERM DEBT AND AVAILABLE CREDIT FACILITIES Committed and Available Credit Facilities (Details) - Sep. 30, 2019 € in Millions, $ in Millions	USD ($)	EUR (€)
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 9,617
Line of Credit Facility, Remaining Borrowing Capacity	7,617
Five Year Competitive Advance and Revolving Credit Facility [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	5,000
Line of Credit Facility, Remaining Borrowing Capacity	5,000
Term Loan Facility, Due December 2023 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000
Line of Credit Facility, Remaining Borrowing Capacity	0
North American Securitization Facility, Due December 2019 [Member] | Secured Debt [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	800
Line of Credit Facility, Remaining Borrowing Capacity	800
European Securitization Facility, Due October 2020 [Member] | Secured Debt [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	437	€ 400
Line of Credit Facility, Remaining Borrowing Capacity	437
Bilateral Revolving Credit Facility, Due October 2019 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100
Line of Credit Facility, Remaining Borrowing Capacity	100
Bilateral Revolving Credit Facility, Due March 2020, Facility One [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100
Line of Credit Facility, Remaining Borrowing Capacity	100
Bilateral Revolving Credit Facility, Due March 2020, Facility Two [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100
Line of Credit Facility, Remaining Borrowing Capacity	100
Bilateral Revolving Credit Facility, Due March 2020, Facility Three [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	280
Line of Credit Facility, Remaining Borrowing Capacity	280
Bilateral Revolving Credit Facility, Due March 2020, Facility Four [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100
Line of Credit Facility, Remaining Borrowing Capacity	100
Bilateral Revolving Credit Facility, Due March 2020, Facility Five [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200
Line of Credit Facility, Remaining Borrowing Capacity	200
Bilateral Revolving Credit Facility, Due May 2020 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200
Line of Credit Facility, Remaining Borrowing Capacity	200
Bilateral Revolving Credit Facility, Due July 2020 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200
Line of Credit Facility, Remaining Borrowing Capacity	200
Bilateral Revolving Credit Facility, Due August 2020 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100
Line of Credit Facility, Remaining Borrowing Capacity	$ 100