DEBT OBLIGATIONS - Contractual Maturities of Debt Obligations (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Debt maturing in:
2019	$ 17,003,852
2020	953,436
2021	2,495,031
2022	197,759
2023	1,158,336
2024 and thereafter	864,651
Total long-term debt	22,673,065
Nonrecourse
Debt maturing in:
2019	879,241
2020	771,582
2021	1,758,663
2022	0
2023	671,013
2024 and thereafter	364,770
Total long-term debt	4,445,269
Recourse
Debt maturing in:
2019	16,124,611
2020	181,854
2021	736,368
2022	197,759
2023	487,323
2024 and thereafter	499,881
Total long-term debt	$ 18,227,796

Debt, Long-term and Short-term, Combined Amount, Maturities, Repayments of Principal, Remainder of Fiscal Year

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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