Condensed Statements of Consolidated Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities:
Net cash provided by operating activities	$ 3,577	$ 2,158
Cash Flows from Investing Activities:
Capital expenditures	(1,311)	(953)
Purchases of short-term and other investments	(1,202)	(2,076)
Proceeds from sale of short-term and other investments	1,397	1,602
Investment in affiliates	(130)
Proceeds from sale of property and equipment	36	43
Other, net	37	52
Net cash used in investing activities	(1,173)	(1,332)
Cash Flows from Financing Activities:
Payments of long-term debt	(1,319)	(912)
Repurchases of common stock	(445)
Proceeds from issuance of long-term debt	228	395
Principal payments under capital leases	(53)	(58)
Other, net	(21)	(47)
Net cash used in financing activities	(1,610)	(622)
Net increase in cash and cash equivalents	794	204
Cash and cash equivalents at beginning of the period	2,002	3,220
Cash and cash equivalents at end of the period	2,796	3,424
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt and capital leases	776	658
Conversion of convertible notes to UAL common stock	201	202
United Airlines, Inc.
Cash Flows from Operating Activities:
Net cash provided by operating activities	3,568	2,149
Cash Flows from Investing Activities:
Capital expenditures	(1,311)	(953)
Purchases of short-term and other investments	(1,202)	(2,076)
Proceeds from sale of short-term and other investments	1,397	1,602
Investment in affiliates	(130)
Proceeds from sale of property and equipment	36	43
Other, net	37	52
Net cash used in investing activities	(1,173)	(1,332)
Cash Flows from Financing Activities:
Payments of long-term debt	(1,319)	(912)
Dividend to UAL	(445)
Proceeds from issuance of long-term debt	228	395
Principal payments under capital leases	(53)	(58)
Other, net	(12)	(38)
Net cash used in financing activities	(1,601)	(613)
Net increase in cash and cash equivalents	794	204
Cash and cash equivalents at beginning of the period	1,996	3,214
Cash and cash equivalents at end of the period	2,790	3,418
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt and capital leases	$ 776	658
Transfer of UAL subsidiaries to United		186
Conversion of convertible notes to UAL common stock		$ 156