Condensed Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities:
Net cash provided by (used in) operating activities		$ (1,956)	$ 5,728
Cash Flows from Investing Activities:
Capital expenditures, net of returns of purchase deposits on flight equipment		(1,630)	(3,336)
Purchases of short-term and other investments		(552)	(2,168)
Proceeds from sale of short-term and other investments		2,182	2,282
Other, net		10	(9)
Net cash provided by (used in) investing activities		10	(3,231)
Cash Flows from Financing Activities:
Proceeds from issuance of debt		13,024	1,109
Proceeds from equity issuance		1,135	0
Payments of long-term debt		(964)	(726)
Repurchases of common stock		(353)	(1,431)
Principal payments under finance leases		(53)	(105)
Capitalized financing costs		(294)	(51)
Other, net		(19)	(29)
Net cash provided by (used in) financing activities		12,476	(1,233)
Net increase in cash, cash equivalents and restricted cash		10,530	1,264
Cash, cash equivalents and restricted cash at beginning of the period		2,868	1,799
Cash, cash equivalents and restricted cash at end of the period	[1]	13,398	3,063
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt, finance leases and other		1,513	314
Right-of-use assets acquired through operating leases		64	344
Lease modifications and lease conversions		503	36
United Airlines, Inc.
Cash Flows from Operating Activities:
Net cash provided by (used in) operating activities		(1,968)	5,698
Cash Flows from Investing Activities:
Capital expenditures, net of returns of purchase deposits on flight equipment		(1,630)	(3,336)
Purchases of short-term and other investments		(552)	(2,168)
Proceeds from sale of short-term and other investments		2,182	2,282
Other, net		10	(9)
Net cash provided by (used in) investing activities		10	(3,231)
Cash Flows from Financing Activities:
Proceeds from issuance of debt		13,024	1,109
Proceeds from equity issuance		1,135	0
Payments of long-term debt		(964)	(726)
Dividend to UAL		(353)	(1,431)
Principal payments under finance leases		(53)	(105)
Capitalized financing costs		(294)	(51)
Other, net		(1)	1
Net cash provided by (used in) financing activities		12,494	(1,203)
Net increase in cash, cash equivalents and restricted cash		10,536	1,264
Cash, cash equivalents and restricted cash at beginning of the period		2,862	1,793
Cash, cash equivalents and restricted cash at end of the period	[2]	13,398	3,057
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt, finance leases and other		1,513	314
Right-of-use assets acquired through operating leases		64	344
Lease modifications and lease conversions		$ 503	$ 36

[1] The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the consolidated balance sheet: Cash and cash equivalents$13,150 $2,959 Restricted cash — Current76 4 Restricted cash — Non-current172 100 Total cash, cash equivalents and restricted cash $13,398 $3,063 

[2] The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the consolidated balance sheet: Cash and cash equivalents$13,150 $2,953 Restricted cash — Current76 4 Restricted cash — Non-current172 100 Total cash, cash equivalents and restricted cash $13,398 $3,057