DEBT - Schedule of Debt (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Debt:
Long-term debt, gross	$ 7,462,963	$ 7,950,663
Debt issuance costs	(26,391)	(25,875)
Total debt	7,436,572	7,924,788
Short-term debt and current portion of long-term debt	(1,133,396)	(1,154,564)
Long-term debt	6,303,176	6,770,224
Unamortized original issue discounts	5,000	6,000
Debt Proceeds	1,756,497
Debt Repayments	1,748,121
Interest Rate Swap \| Fair Value Hedging \| Designated as Hedging Instrument
Debt:
Notional amount	$ 150,000	525,000
U.S. commercial paper
Debt:
Long-term debt, weighted-average interest rate	0.25%
Long-term debt, gross	$ 55,408	511,486
Canadian commercial paper
Debt:
Long-term debt, weighted-average interest rate	0.99%
Long-term debt, gross	$ 96,040	136,199
Trade receivables program
Debt:
Long-term debt, weighted-average interest rate	0.00%
Long-term debt, gross	$ 0	0
Debt Proceeds	300,000
Debt Repayments	$ 300,000
Global revolving credit facility
Debt:
Long-term debt, weighted-average interest rate	1.25%
Long-term debt, gross	$ 800	8,104
Unsecured U.S. notes — Medium-term notes
Debt:
Long-term debt, weighted-average interest rate	3.36%
Long-term debt, gross	$ 5,770,695	5,965,064
Unsecured U.S. obligations
Debt:
Long-term debt, weighted-average interest rate	2.53%
Long-term debt, gross	$ 500,000	200,000
Unsecured foreign obligations
Debt:
Long-term debt, weighted-average interest rate	1.80%
Long-term debt, gross	$ 271,639	270,719
Asset-backed U.S. obligations
Debt:
Long-term debt, weighted-average interest rate	2.52%
Long-term debt, gross	$ 720,925	807,374
Finance lease obligations and other
Debt:
Long-term debt, gross	47,456	$ 51,717
Medium-term notes
Debt:
Debt Proceeds	799,648
Debt Repayments	1,000,000
U.S. and foreign term loan, finance lease obligations, and other repayments
Debt:
Debt Proceeds	656,849
Debt Repayments	$ 448,121

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Nominal or face amount used to calculate payment on derivative.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, including portion classified as current.

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