CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net Income	$ (446)	$ 266
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	215	211
Stock-based compensation and other	7	16
Changes in certain assets and liabilities:
Changes in deferred tax provision	(98)	62
Increase in deferred revenue	84	75
Other - net	(262)	18
Net cash provided by operating activities	321	1,033
Property and equipment additions:
Aircraft and aircraft purchase deposits	(58)	(172)
Other flight equipment	(43)	(83)
Other property and equipment	(67)	(78)
Total property and equipment additions, including capitalized interest	(168)	(333)
Purchases of marketable securities	(1,004)	(885)
Sales and maturities of marketable securities	1,038	663
Other investing activities	10	25
Net cash used in investing activities	(124)	(530)
Cash flows from financing activities:
Proceeds from issuance of debt	1,265	254
Long-term debt payments	(125)	(532)
Common stock repurchases	(31)	(25)
Dividends paid	(45)	(86)
Other financing activities	27	26
Net cash provided by (used in) financing activities	1,091	(363)
Net increase in cash, cash equivalents, and restricted cash	1,288	140
Cash, cash equivalents, and restricted cash at beginning of year	232	114
Cash, cash equivalents, and restricted cash at end of the period	1,520	254
Cash paid during the period for:
Interest (net of amount capitalized)	25	34
Income taxes	0	0
Cash and cash equivalents	1,509	244
Restricted cash included in Prepaid expenses and other current assets	$ 11	$ 10