Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (159)	$ (278)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation and amortization	365	324
Impairment of long-lived assets	0	16
Unrealized mark-to-market adjustment on available for sale securities	(4)	5
Unrealized/realized (gain) loss on fuel derivative instruments	0	34
Deferred income taxes	(52)	(97)
Loss on extinguishment of debt	0	72
Changes in certain assets and liabilities:
Accounts and other receivables	(232)	(334)
Other assets	50	(44)
Accounts payable and accrued liabilities	(72)	177
Air traffic liability	947	885
Other liabilities	(47)	(105)
Cash collateral received from (provided to) derivative counterparties	(30)	385
Other, net	(60)	31
Net cash provided by operating activities	706	1,071
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(1,046)	(510)
Assets constructed for others	(6)	(4)
Purchases of short-term investments	(2,204)	(925)
Proceeds from sales of short-term and other investments	1,679	1,300
Net cash used in investing activities	(1,577)	(139)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Employee stock plans	9	6
Payments of long-term debt and finance lease obligations	(59)	(93)
Payments of cash dividends	(214)	0
Payments for repurchases and conversions of convertible debt	0	(230)
Other, net	2	3
Net cash used in financing activities	(262)	(314)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(1,133)	618
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	9,492	12,480
CASH AND CASH EQUIVALENTS AT END OF PERIOD	8,359	13,098
CASH PAYMENTS FOR:
Interest, net of amount capitalized	19	20
Income taxes	2	4
SUPPLEMENTAL DISCLOSURE OF NONCASH TRANSACTIONS:
Adoption of Accounting Standards Update 2020-06, Debt	0	245
Right-of-use assets acquired under operating leases	$ 47	$ 24