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Variable Interest Entities (Details) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jul. 31, 2018 Air_craft | Dec. 31, 2018 USD ($) Air_craft
Variable Interest Entity [Line Items] |  |
Assets in partnership |  | $ 231.8
Number of Aircraft engines | Air_craft |  | 23
Jet Holding S.a.r.l. [Member] |  |
Variable Interest Entity [Line Items] |  |
Ownreship interest | 100.00% |
Weisel Capital Management LLC [Member] |  |
Variable Interest Entity [Line Items] |  |
Assets in partnership |  | $ 227.0
FAN Engine Securitization Ltd [Member] |  |
Variable Interest Entity [Line Items] |  |
Number of Aircraft engines | Air_craft | 24 |
FAN Engine Securitization Ltd [Member] | Other Income [Member] |  |
Variable Interest Entity [Line Items] |  |
Gain recognized upon consolidation |  | $ 15.3
FAN Engine Securitization Ltd [Member] | Jet Holding S.a.r.l. [Member] |  |
Variable Interest Entity [Line Items] |  |
Ownreship interest | 100.00% |

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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=108788376&loc=d3e5728-111685 + Details
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