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Financial Derivative Instruments - Narrative (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 USD ($) | Dec. 31, 2019 aircraft
Derivative [Line Items] |  |
Net unrealized losses, net of taxes | $ 173 |
Aircraft lease term | 9 years |
Remaining AOCI associated with future aircraft deliveries | $ 59 |
Aircraft lease term | 9 years |
Interest rate derivatives |  |
Derivative [Line Items] |  |
Cash collateral held (from) by CP | $ 0 |
Interest rate swap |  |
Derivative [Line Items] |  |
Number of aircraft leases | aircraft |  | 12

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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
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