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Schedule II - Primerica, Inc. (Parent Only) - Notes to Condensed Financial Statements (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jul. 31, 2012
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, face amount | $ 375,000,000 | $ 375,000,000 |  |
Debt instrument, interest rate, stated percentage |  | 4.75% |  |
Debt instrument maturity date |  | Jul. 15, 2022 |  |
Non-life Insurance Subsidiaries [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Cash dividends paid to parent company | 80,100,000 | $ 96,000,000.0 | $ 72,500,000 |
Life Insurance Subsidiaries [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Cash dividends paid to parent company | 222,800,000 | 160,900,000 | $ 117,000,000.0 |
Maximum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, face amount | 1,500,000,000 |  |  |
Revolving Credit Facility [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, face amount | $ 200,000,000.0 |  |  |
Debt instrument maturity date | Dec. 19, 2022 |  |  |
New unsecured revolving credit facility | $ 200,000,000.0 |  |  |
Debt instrument, frequency of commitment fee payable | quarterly |  |  |
Debt instrument, outstanding amount |  | $ 0 |  |
Line of credit facility, Termination date | Dec. 19, 2022 |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, commitment fee percentage | 0.125% |  |  |
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, commitment fee percentage | 0.225% |  |  |
Revolving Credit Facility [Member] | LIBOR Rate [Member] | Minimum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, interest rate margin | 1.125% |  |  |
Revolving Credit Facility [Member] | LIBOR Rate [Member] | Maximum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, interest rate margin | 1.625% |  |  |
Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, interest rate margin | 0.125% |  |  |
Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, interest rate margin | 0.625% |  |  |
Letter of Credit [Member] | LIBOR Rate [Member] | Minimum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, interest rate margin | 0.125% |  |  |
Letter of Credit [Member] | LIBOR Rate [Member] | Maximum [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, interest rate margin | 0.625% |  |  |
Parent Company [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt instrument, face amount | $ 375,000,000.0 |  |  |
Issue price of senior notes |  |  |  | 99.843%
Debt instrument, interest rate, stated percentage |  |  |  | 4.75%
Debt instrument maturity date | Jul. 15, 2022 |  |  |
Guarantor obligations, maximum exposure, undiscounted | $ 20,000,000.0 |  |  |

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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 This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Description of when the fee for available but unused credit capacity is required to be paid (for example, annually, quarterly, or monthly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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