OTHER ASSETS AND LIABILITIES

3 Months Ended

Mar. 31, 2012

Notes to Financial Statements [Abstract]

OTHER ASSETS AND LIABILITIES

7.OTHER ASSETS AND LIABILITIES

		March 31,		December 31,
(in millions)		2012		2011
Derivative contracts		$	264	$	253
Intangible assets			147		155
Non-current investments			73		97
Other			157		121
	Other assets	$	641	$	626

		March 31,		December 31,
(in millions)		2012		2011
Retirement plans		$	104	$	110
Aircraft rentals			88		57
Vacation pay			253		248
Health			56		56
Derivative contracts			41		85
Workers compensation			166		162
Accrued Taxes			105		68
Other			211		210
	Accrued liabilities	$	1,024	$	996

		March 31,		December 31,
(in millions)		2012		2011
Postretirement obligation		$	109	$	107
Non-current leasehold interest			301		311
Construction obligation			239		202
Other			275		290
	Other non-current liabilities	$	924	$	910