Name:	hl_LongtermDebtMaturitiesRepaymentsOfPrincipalAndInterestInNextTwelveMonths
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Amount of long-term debt payable, sinking fund requirements, and other securities issued including interest 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.

No definition available.

Name:	hl_LongtermDebtMaturitiesRepaymentsOfPrincipalAndInterestInYearThree
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Data Type:	xbrli:monetaryItemType
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Amount of long-term debt payable, sinking fund requirements, and other securities including interest 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.

No definition available.

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

No definition available.

Name:	hl_LongtermDebtObligationsIncludingInterest
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Interest attributed to long term debt obligations.

No definition available.

Name:	hl_LongtermDebtObligationsInterest
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 50
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Amount of debt discount to be amortized after one year or the normal operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent
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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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