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Supplemental Cash Flow Information - Narrative (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2020 USD ($)
Supplemental Cash Flow Elements [Abstract] |
Repayment of loans related to life insurance policies | $ 13.7

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- Definition Net amount paid or received by the entity associated with issuance or collection of loans made to policy holders, principally secured by the benefits under the policy. + 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(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
Name: | us-gaap_PaymentsForProceedsFromPolicyLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowElementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration