Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Net Cash Provided by Operating Activities
Net Cash Provided by Operating Activities	$ 4,306	$ 2,557
Property and equipment additions:
Flight equipment, including advance payments	(1,879)	(527)
Ground property and equipment, including technology	(845)	(672)
Purchase of short-term investments	(474)	(5,587)
Redemption of short-term investments	2,289	6,494
Purchase of equity investments	(100)	0
Other, net	108	258
Net cash used in investing activities	(901)	(34)
Cash Flows from Financing Activities:
Proceeds from long-term obligations	0	1,902
Payments on debt and finance lease obligations	(2,395)	(3,133)
Other, net	(27)	111
Net cash used in financing activities	(2,422)	(1,120)
Net Increase in Cash, Cash Equivalents and Restricted Cash Equivalents	983	1,403
Cash, cash equivalents and restricted cash equivalents at beginning of period	8,569	10,055
Cash, cash equivalents and restricted cash equivalents at end of period	9,552	11,458
Non-Cash Transactions:
Flight and ground equipment acquired under finance leases	81	752
Right-of-use assets acquired under operating leases	324	259
Operating leases converted to finance leases	140	26
Equity investments and other financings	330	240
Current Assets:
Cash and cash equivalents	9,221	10,357
Restricted cash included in prepaid expenses and other	154	172
Noncurrent Assets:
Restricted cash included in other noncurrent assets	177	929
Total cash, cash equivalents and restricted cash equivalents	$ 9,552	$ 11,458