Available for Sale Investment Maturity Term

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- Definition

Equity Securities, Ownership Percentage

+ References

No definition available.

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- Definition

Fair Value [Line Items]

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value [Line Items]
Gain (loss) on equity securities		$ 25,000,000		$ 77,000,000
Unrealized gain (loss) on derivative asset		(4,000,000)	$ (24,000,000)	(5,000,000)
MileagePlus Financing \| Secured Debt
Fair Value [Line Items]
Face amount	$ 6,800,000,000		$ 6,800,000,000
Asset-Backed Securities \| Minimum
Fair Value [Line Items]
Available-for-sale securities remaining maturities			1 year
Asset-Backed Securities \| Maximum
Fair Value [Line Items]
Available-for-sale securities remaining maturities			14 years
Corporate Debt \| Maximum
Fair Value [Line Items]
Available-for-sale securities remaining maturities			3 years
U.S. Government and Agency Notes
Fair Value [Line Items]
Available-for-sale securities remaining maturities			2 years
Other Fixed-Income Securities
Fair Value [Line Items]
Available-for-sale securities remaining maturities			1 year
Azul
Fair Value [Line Items]
Equity stake in Azul	2.00%		2.00%
Gain (loss) on equity securities	$ 17,000,000	$ 21,000,000	$ 267,000,000	$ 73,000,000
Carrying value of investment	$ 118,000,000		$ 118,000,000
Azul \| Preferred Stock
Fair Value [Line Items]
Equity stake in Azul	8.00%		8.00%