Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income	$ 2,181	$ 1,136	$ 754
Unrealized gain (loss) on defined benefit plan items, net of deferred taxes of ($7), ($8), and $15	(12)	(16)	24
Other, net of deferred taxes of $-, $-, and $7	(2)	0	9
OTHER COMPREHENSIVE INCOME (LOSS)	(313)	(735)	116
COMPREHENSIVE INCOME	1,868	401	870
Fuel derivatives
Unrealized gain (loss) on derivatives, net of tax	(308)	(727)	52
Interest rate derivatives
Unrealized gain (loss) on derivatives, net of tax	$ 9	$ 8	$ 31