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Cash Surrender Value of Life Insurance Policies, net (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Information about cash surrender value of life insurance policies |  |  |
Cash surrender value of all life insurance policies, net of loans and related accrued interest | $ 43.7 | $ 42.7 |
Borrowed portion |  |  |
Information about cash surrender value of life insurance policies |  |  |
Amount of borrowed funds against cash surrender value of certain life insurance policies used to pay premiums and accrued interest owed | 60.0 | 56.0 | $ 56.1
Paid premiums and accrued interest on loans against policies | $ 76.8 | 71.7 | $ 70.8
Earle M. Jorgensen Company ("EMJ") | Borrowed portion |  |  |
Information about cash surrender value of life insurance policies |  |  |
Interest on borrowings against cash surrender value of certain life insurance policies (as a percent) | 11.76% |  |
Rate at which the portion of the policy cash surrender value earns interest and dividend income (as a percent) | 11.26% |  |
Loans and accrued interest outstanding on EMJ's life insurance policies | $ 739.0 | $ 684.0 |
Earle M. Jorgensen Company ("EMJ") | Unborrowed portion | Minimum |  |  |
Information about cash surrender value of life insurance policies |  |  |
Rate at which the portion of the policy cash surrender value earns interest and dividend income (as a percent) | 4.00% |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Represents the gross amount of loans borrowed by the entity against cash surrender value of certain life insurance policies to pay premiums and accrued interest owed. + References No definition available. + Details
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- Definition Represents the fixed interest rate on borrowings against the cash surrender value of certain life insurance policies. + References No definition available. + Details
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- Definition Represents the amount of loans and accrued interest outstanding on life insurance policies. + References No definition available. + Details
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- Definition Represents the premiums and accrued interest on loans outstanding against life insurance policies. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6812-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Rate of interest credited to policyholder deposits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121643868&loc=d3e14931-158439 + Details
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