Financial Instruments and Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The table below presents disclosures about the financial assets and liabilities measured at fair value on a recurring basis in UAL's financial statements (in millions):

	June 30, 2019								December 31, 2018
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Cash and cash equivalents	$	3,221	$	3,221	$	—	$	—	$	1,694	$	1,694	$	—	$	—
Short-term investments:
Corporate debt	1,053		—		1,053		—		1,023		—		1,023		—
Asset-backed securities	697		—		697		—		746		—		746		—
U.S. government and agency notes	116		—		116		—		108		—		108		—
Certificates of deposit placed through an account registry service ("CDARS")	59		—		59		—		75		—		75		—
Other fixed-income securities	107		—		107		—		116		—		116		—
Other investments measured at net asset value ("NAV")	191		—		—		—		188		—		—		—
Restricted cash	105		105		—		—		105		105		—		—
Long-term investments:
Equity securities	301		301		—		—		249		249		—		—
Enhanced equipment trust certificates ("EETC")	16		—		—		16		18		—		—		18
AVH Derivative Assets (defined below)	10		—		—		10		11		—		—		11

Carrying Values and Estimated Fair Values of Financial Instruments

The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above (in millions):

	June 30, 2019										December 31, 2018
	Carrying Amount		Fair Value								Carrying Amount		Fair Value
			Total		Level 1		Level 2		Level 3				Total		Level 1		Level 2		Level 3
Long-term debt	$	14,193	$	14,691	$	—	$	10,915	$	3,776	$	13,445	$	13,450	$	—	$	9,525	$	3,925