Amount of accrued pad-in-kind interest added to principal balance.

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Represents the percentage of prepayment premium.

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Represent the information pertaining to the Paid in Kind Interest other than in cash for additional securities

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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 in the next rolling twelve months following the latest balance sheet. For 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 after the fifth rolling twelve months following the latest balance sheet. For 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 rolling twelve months following the latest balance sheet. For 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 rolling twelve months following the latest balance sheet. For 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 rolling twelve months following the latest balance sheet. For 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 rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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LONG-TERM DEBT - Additional information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2013	Dec. 31, 2017
BHE Seller notes
Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract]
2020	$ 53.2
2021	46.3
2022	39.0
2023	34.8
2024	158.2
Thereafter	347.1
Total	678.6
Equipment term loans \| BHE Seller notes
Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract]
2020	48.2
2021	43.8
2022	34.8
2023	32.3
2024	19.6
Thereafter	9.7
Total	$ 188.4
Senior subordinated secured debt \| Main Street Capital Corporation
Loan amount		$ 20.0
Interest rate (as a percent)		12.00%
Paid-in-kind interest (as a percent)		2.50%
Accrued, Paid-in-kind interest added to principal balance			$ 0.1
Senior subordinated secured debt \| Prudential Capital Partners
Loan amount		$ 20.0
Interest rate (as a percent)		12.00%
Paid-in-kind interest (as a percent)		2.50%
Accrued, Paid-in-kind interest added to principal balance			$ 0.1
Subordinated notes
Make-whole payment	5.00%
Subordinated notes \| LST Seller notes
Loan amount	$ 22.0
Interest rate (as a percent)	10.00%
Subordinated notes \| DTR Seller notes
Loan amount	$ 1.0
Interest rate (as a percent)	5.00%
Subordinated notes \| BHE Seller notes
Loan amount	$ 2.0
Interest rate (as a percent)	7.00%
Line of credit \| BHE Seller notes
Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract]
2022	$ 1.7
Total	1.7
Term loan facility \| BHE Seller notes
Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract]
2020	5.0
2021	2.5
2022	2.5
2023	2.5
2024	138.6
Thereafter	337.4
Total	$ 488.5