SUPPLEMENTAL FINANCIAL INFORMATION



(in millions)	June 30, 2018		December 31, 2017
Derivative contracts	$	275	$	136
Intangible assets, net	406		413
Capital lease receivable	68		76
Non-current prepaid maintenance	94		5
Other	178		156
Other assets	$	1,021	$	786



(in millions)	June 30, 2018		December 31, 2017
Accounts payable trade	$	280	$	186
Salaries payable	215		201
Taxes payable	277		203
Aircraft maintenance payable	54		38
Fuel payable	95		123
Other payables	417		569
Accounts payable	$	1,338	$	1,320



(in millions)	June 30, 2018		December 31, 2017
ProfitSharing and savings plans	$	299	$	579
Aircraft and other lease related obligations	39		40
Permanently grounded aircraft liability (a)	5		34
Vacation pay	383		365
Contract ratification bonuses	96		83
Health	97		100
Workers compensation	170		172
Property and income taxes	72		57
Other	200		270
Accrued liabilities	$	1,361	$	1,700



(in millions)	June 30, 2018		December 31, 2017
Postretirement obligation	$	288	$	275
Non-current lease-related obligations	65		85
Permanently grounded aircraft liability (a)	5		13
Other deferred compensation	247		237
Derivative contracts	23		21
Other	64		76
Other noncurrent liabilities	$	692	$	707

(a) These amounts represent the current and noncurrent portion of the Company's cease-use liability recorded as a result of the Company grounding its remaining leased Boeing 737-300 aircraft in 2017. The decrease was primarily related to contractual rent obligations paid.

For further details on fuel derivative and interest rate derivative contracts, see Note 3.

Other Operating Expenses

Other operating expenses consist of distribution costs, advertising expenses, personnel expenses, professional fees, aircraft rentals, and other operating costs, none of which individually exceeded 10 percent of Operating expenses.