Cost Method Investments - JetBlue Tech Ventures

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Cost Method Investments, TWA Flight Center Hotel

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Loyalty Program, Contract Term

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Ownership Interest, Measurement Alternative, Percentage

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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The profit or loss on sales of previously unissued stock by subsidiaries or equity investees made to investors outside the consolidated group that is not reported as operating income. Represents the difference in the parent company's carrying amount of the equity interest in the subsidiary or equity investee immediately before and after the transaction.

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Amount of gain (loss) on sale of investment in debt security measured at amortized cost (held-to-maturity), including other-than-temporary impairment (OTTI).

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Debt securities, held-to-maturity, sold, realized gain (loss)		$ 0	$ 0	$ 0
Equity method investments		34	38
Gain on equity method investments	$ 15	0	15	0
Cost method investments - jetblue tech ventures		$ 40	41
Ownership interest		10.00%
Cost method investments TWA flight center hotel		$ 14	13
Advertising expense		$ 45	66	72
Minimum
Finite-Lived Intangible Assets [Line Items]
Term of contract under loyalty program		1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Term of contract under loyalty program		7 years
Computer software, intangible asset
Finite-Lived Intangible Assets [Line Items]
Useful life of software		5 years
Capitalized computer software, net		$ 121	102
Amortization expense		44	52	$ 46
2021		38
2022		34
2023		27
2024		16
2025		6
High density airports, take-off and landing slots
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net (excluding goodwill)		$ 139	$ 139