Condensed Statements of Consolidated Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:
Net cash provided by operating activities	$ 2,158	$ 1,541
Cash Flows from Investing Activities:
Capital expenditures	(953)	(821)
Increase in short-term and other investments, net	(474)	(41)
Decrease in restricted cash, net	44	12
Proceeds from sale of property and equipment	43	17
Other, net	8
Net cash used in investing activities	(1,332)	(833)
Cash Flows from Financing Activities:
Payments of long-term debt	(912)	(1,737)
Proceeds from issuance of long-term debt	395	520
Principal payments under capital leases	(58)	(73)
Other, net	(47)	(45)
Net cash used in financing activities	(622)	(1,335)
Net increase (decrease) in cash and cash equivalents	204	(627)
Cash and cash equivalents at beginning of the period	3,220	4,770
Cash and cash equivalents at end of the period	3,424	4,143
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt	658	225
Exchanges of certain convertible notes for common stock	202	189
Airport construction financing	11	29
United Airlines, Inc.
Cash Flows from Operating Activities:
Net cash provided by operating activities	2,149	1,538
Cash Flows from Investing Activities:
Capital expenditures	(953)	(821)
Increase in short-term and other investments, net	(474)	(41)
Decrease in restricted cash, net	44	12
Proceeds from sale of property and equipment	43	16
Other, net	8
Net cash used in investing activities	(1,332)	(834)
Cash Flows from Financing Activities:
Payments of long-term debt	(912)	(1,737)
Proceeds from issuance of long-term debt	395	520
Principal payments under capital leases	(58)	(73)
Other, net	(38)	(42)
Net cash used in financing activities	(613)	(1,332)
Net increase (decrease) in cash and cash equivalents	204	(628)
Cash and cash equivalents at beginning of the period	3,214	4,765
Cash and cash equivalents at end of the period	3,418	4,137
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt	658	225
Transfer of UAL subsidiaries to United	186
Exchanges of certain convertible notes for common stock	156
Airport construction financing	$ 11	$ 29