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Variable Interest Entities (Details) $ in Millions | Jul. 31, 2018 Air_craft | Sep. 30, 2019 USD ($)
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Variable Interest Entity [Line Items] |  |
Assets in partnership |  | $ 245.2
Jet Holding S.a.r.l. [Member] |  |
Variable Interest Entity [Line Items] |  |
Ownership interest | 100.00% |
Weisel Capital Management LLC [Member] |  |
Variable Interest Entity [Line Items] |  |
Assets in partnership |  | $ 223.4
FAN Engine Securitization Ltd [Member] |  |
Variable Interest Entity [Line Items] |  |
Number of Aircraft engines | Air_craft | 24 |
FAN Engine Securitization Ltd [Member] | Jet Holding S.a.r.l. [Member] |  |
Variable Interest Entity [Line Items] |  |
Ownership interest | 100.00% |

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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 Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=118582676&loc=d3e5728-111685 + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685 + Details
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