DEBT - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt:
Debt, gross	$ 6,006,784	$ 6,636,615
Debt issuance costs and original issue discounts	(19,667)	(26,379)
Total debt	5,987,117	6,610,236
Short-term debt and current portion of long-term debt	(1,354,821)	(516,581)
Long-term debt	4,632,296	6,093,655
Interest Rate Swap \| Fair Value Hedging \| Designated as Hedging Instrument
Debt:
Aggregate notional amount of interest rate swaps	$ 150,000	150,000
U.S. commercial paper
Debt:
Weighted Average Interest Rate	0.18%
Debt, gross	$ 166,626	214,375
Canadian commercial paper
Debt:
Weighted Average Interest Rate	0.29%
Debt, gross	$ 14,946	62,800
Trade receivables financing program
Debt:
Weighted Average Interest Rate	0.00%
Debt, gross	$ 0	0
Global revolving credit facility
Debt:
Weighted Average Interest Rate	0.00%
Debt, gross	$ 0	200
Unsecured U.S. obligations
Debt:
Weighted Average Interest Rate	3.47%
Debt, gross	$ 200,000	200,000
Unsecured U.S. notes — Medium-term notes
Debt:
Weighted Average Interest Rate	3.40%
Debt, gross	$ 4,852,348	5,174,180
Unsecured foreign obligations
Debt:
Weighted Average Interest Rate	1.89%
Debt, gross	$ 161,932	254,259
Asset-backed U.S. obligations
Debt:
Weighted Average Interest Rate	2.59%
Debt, gross	$ 563,747	682,383
Finance lease obligations and other
Debt:
Debt, gross	$ 47,185	$ 48,418

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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, 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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