CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net Income	$ (232)	$ 4
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	108	106
Stock-based compensation and other	9	11
Changes in certain assets and liabilities:
Changes in deferred tax provision	(44)	2
Increase in deferred revenue	33	41
Other - net	(211)	(24)
Net cash provided by operating activities	33	468
Property and equipment additions:
Aircraft and aircraft purchase deposits	(57)	(53)
Other flight equipment	(35)	(29)
Other property and equipment	(27)	(33)
Total property and equipment additions, including capitalized interest	(119)	(115)
Purchases of marketable securities	(527)	(351)
Sales and maturities of marketable securities	511	275
Other investing activities	8	5
Net cash used in investing activities	(127)	(186)
Cash flows from financing activities:
Proceeds from issuance of debt	825	254
Long-term debt payments	(60)	(393)
Common stock repurchases	(31)	(13)
Dividends paid	(45)	(43)
Other financing activities	(5)	24
Net cash provided by (used in) financing activities	684	(171)
Net increase (decrease) in cash, cash equivalents, and restricted cash	590	111
Cash, cash equivalents, and restricted cash at beginning of year	232	114
Cash, cash equivalents, and restricted cash at end of the period	822	225
Cash paid during the period for:
Interest (net of amount capitalized)	9	18
Income taxes	0	0
Cash and cash equivalents	811	215
Restricted cash included in Prepaid expenses and other current assets	$ 11	$ 10