Supplemental Financial Information (Tables)

3 Months Ended

Mar. 31, 2019

Table Text Block [Abstract]

Other Assets

(in millions)	March 31, 2019		December 31, 2018
Derivative contracts	$	150	$	95
Intangible assets, net	313		400
Finance lease receivable	65		61
Other	197		164
Other assets	$	725	$	720

Schedule of Accounts Payable

(in millions)	March 31, 2019		December 31, 2018
Accounts payable trade	$	256	$	263
Salaries payable	213		216
Taxes payable	291		220
Aircraft maintenance payable	67		69
Fuel payable	119		122
Other payable	466		526
Accounts payable	$	1,412	$	1,416

Accrued Liabilities

(in millions)	March 31, 2019		December 31, 2018
Profitsharing and savings plans	$	125	$	580
Vacation pay	413		403
Health	96		107
Workers compensation	168		166
Property and income taxes	165		68
Other	383		425
Accrued liabilities	$	1,350	$	1,749

Other Noncurrent Liabilities

(in millions)	March 31, 2019		December 31, 2018
Postretirement obligation	$	235	$	232
Other deferred compensation	272		247
Other	101		171
Other noncurrent liabilities	$	608	$	650